Guide: How to set up a fan curve in the BIOS

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Setting up a fan curve involves a balance between airflow and noise. But it is not that difficult when you know a good way to do it, and you only have to do it once.

First, a word about the fans. I'll try not to make it too difficult, there is just some precise terminology i have to use, but in the end it's not that hard to understand, i promise.

If you want to skip this part and go right to the information about setting up fan curves, scroll down to FAN CURVES.


There are two different types of fans, which you can tell apart by their plug. Let's look at this picture:

noctua_pin_configuration_12v_fans.png


A three-pin plug means the fan is DC (= direct current) voltage-controlled. A 4-pin plug means it's PWM (pulse width modulation) controlled.
With a DC-controlled fan, the fan speed is regulated by the board powering it with lower or higher voltages (say, between 3V and 12V) instead of steady 12V.
With a PWM-controlled fan, the board powers it with a steady 12V, and the fan speed is controlled through the fourth pin via a PWM signal.

Note: The "RPM Speed Signal" pin (rotations per minute) in the picture is telling the motherboard at which speed the fan is spinning, it is not controlling the fan.

So for each fan, you have to select the right fan control method: DC for a 3-pin fan or PWM for a 4-pin fan.


Beware: Some cheaper motherboard models may only allow DC control for most of the fan headers, or only allow PWM control for all of the fan headers, regardless of the fan headers all being 4-pin headers or not. This may save them a few cents/pennies on components around the fan headers, but it can be very inconvenient if you have the wrong type of fans, and you can't control them properly. So pay extra attention to that.

It's easy to notice in the BIOS: When you can't control some 4-pin fan headers with a PWM signal and instead only have DC (voltage) control available. Or when you don't have the ability to set a DC voltage for the fans, and you can only set a PWM percentage (then, when using 3-pin fans, they would always run at full speed here, because they would get constant 12V).

But you can also find out about this in the manual, before purchasing such a board.
Two examples of such boards. First, a board where they saved money on two of the headers:

PWM DC.png


Both CPUFAN headers can control the fan speed via PWM signal or DC voltage (depending on the fan and which control method you select in the BIOS).
But the SYSFAN headers at the bottom can only control the fan speed via DC voltage, despite having a 4-pin fan header.
"NC" means Not Connected, so they didn't implement PWM control on those headers for cost-saving. On more expensive board models, all the fan headers should be able to control fans with both methods. But in this example, you'd want your 4-pin PWM fans on the two CPUFAN headers, if possible.

Second example, from the MSI PRO Z790-S WIFI, the worst Intel Z-series board on the market:

Screenshot 2024-12-31 at 12-55-46 PROZ790-SWIFI.pdf.png


This board simply doesn't offer DC Voltage control for any fan headers, only PWM control. So if you use 3-pin case fans (or CPU fans) on this board, since they don't have the fourth wire for the PWM speed control signal, they're stuck at a full 12V. There is no way to control 3-pin fans on this board at all, the fan curves will be useless for them. You need some kind of solution like a seperate fan controller, which some cases may offer.

These shortcomings are mostly on lower-end board models. Once you go for a slightly nicer board model (from lower mid-range onwards), they should be able to have all fan headers controlled in both ways, DC voltage or PWM.


By the way: Every PWM fan can also be DC-controlled, it's just a slightly worse method of controlling it. One advantage of PWM control is that the fan will always turn on, even at a very low setting (unless it's purposely configured to stay off below 5% or 20% PWM signal for example). But when you go too low with the voltage on DC control, the fan might not turn on reliably, as the voltage is not enough to overcome the fan motor's resistance, so you'd have to add a bit of extra margin on the voltage.

The general target for the fan curves is:
- Nice low RPM (fan speed) at low temperatures
- Let the RPM ramp up gently with rising temperatures
- Only ramping up the RPM faster when the temperature approaches a quite high level.


Now, before setting the fan curves: Since we're doing this in the BIOS, this is a good time to first update the BIOS to the newest version. Because if you decide to update the BIOS later, it will reset all settings (on a lot of boards, that includes the fan curves), and you have to enter everything again. But since we'll start from scratch now anyway, updating the BIOS beforehand is a good idea.

A quick how-to on BIOS updates:
1) Get the latest BIOS. It's always the topmost one when you click on "BIOS" on the MSI support page for the mainboard.
2) Extract the file and you will get a text file and the BIOS file. Put the BIOS file into the root folder of a USB stick/drive.
3) Enter the BIOS by pressing DEL during boot, go to "M-FLASH" in the BIOS.
4) Once M-Flash (the updater) is loaded, it will show a list of your drives. Select the USB stick and select the previously extracted BIOS file on there.
5) It will ask for confirmation and then update the BIOS. It's fully automatic from there, takes about two minutes.


Now, before we come to the topic of how to set good fan curves, let's first look at a proper way to create an airflow through the case. Normally there should be at least one intake fan (usually at the front) and at least one exhaust fan (usually at the rear, in line with the CPU cooler). This will ensure a defined airflow through the case which can extract the heat from the components.

All the fans should work in unison within that airflow, to get one stream of cold air coming in from the front, picking up some heat (mostly from the CPU and GPU), and the warmed-up air being exhausted out of the rear. So in modern cases, the airflow usually looks something like this:

airflow.png
master.png



Perhaps minus the fans on top of the case. But there often will be at least one fan (if not two or three) in the front, and one exhaust fan in the rear behind the CPU cooler. Each fan will have one or two arrow markings on one of the sides, showing the rotational direction as well as the airflow direction, and all the "airflow arrows" should be pointing towards the rear of the case. When the fans come pre-installed in the case, they will already be installed like that.

If the front intake fans outnumber the rear exhaust fan by 2:1 or 3:1, then the rear fan ideally runs on slightly higher RPM than the front fans, to create a more even airflow.



FAN CURVES

Now it's time to set the fan curves. Enter the BIOS (press DEL after power-on/reboot) and open the "Hardware Monitor" which offers the fan control.
For each fan, you can set four points of a curve, MSI calls this the "Smart Fan Mode".

This is how it might look:

MSI_SnapShot_21 Fan1.png


Note that each of the four points of a fan curve is restricted by the points next to it, it can't go lower than the previous point or higher than the following point.
So you may have to move a neighboring point if you hit a restriction on the point you want to adjust.


The goal for the first point of the curve is to find a setting with a bit of airflow, but where the fan is very quiet. This will be the setting when the CPU is doing nothing (idle).
You don't need a lot of airflow when the CPU temperature is low anyway. My fans spin only at around 400 RPM there, as you can see, just enough to keep some air moving through the case. Note that i have a high-end air cooler with two fans on there, as well as three 140mm case fans in a large case. So in a small case with fewer fans, you will need a bit higher RPM to keep it this cool inside. But there is no need to have the fans spin for example at 1000 RPM in idle.

For testing, it's good to open the case and put your hand behind the fan or behind the cooler (where the air gets blown through) to feel how much airflow the fan generates with different values. As long as you don't touch the motherboard or other components, there's no danger. And you can immediately feel the results of your adjustments.

For testing the airflow, turn off "Smart Fan Mode" for a while, so you can influence the fan speed directly. You can also turn off the other fans, so you can find the sweet spot for low temperatures with the particular fan you're checking. Remember, you only need a slight airflow for this starting point of the fan curve, the goal is not to have unnecessary noise when the temperature is low.

For this goal (a bit of airflow, but being very quiet), the resulting PWM % value (or DC voltage on 3-pin fans) is your starting point at 30°C or 40°C for this fan's curve. The temperature you select depends on where you want the fan to first start ramping up. It makes no sense to define a temperature below the ambient temperature, or below the minimum CPU temperature, you'd just be wasting the whole adjustment point. So anything below 30°C only makes sense with powerful cooling methods that can actually hold the CPU below 30°C.

Next, don't go to the second point, but the third one. Find a good level where the airflow is strong but the noise is still bearable, and use this as your "full CPU load" setting for higher temperature values like 65°C or 75°C. To fine-tune this point of the curve, you might have to go back and forth from the BIOS to Windows, where you monitor the fan speed with certain CPU load and fine-tune the setting afterwards. But it doesn't take that long to do, and you only have to do it once.

As for the second point of the curve, the inbetween point: Set it slightly below a straight line between the first and third point, to not make the fans ramp up too fast at medium temperatures.

For the final point, set it for 85°C or 90°C CPU temperature and 100% PWM value (or full 12V DC with a 3-pin fan). This is the "worst case" point for safety.
Now you should have all four points of the curve set to a sensible value, and most of the time, the fan should stay between the first and the third point. The highest last point is just a safety measure.

I would always create such an "ascending dominant" curve:

curve.png


A perfectly straight line makes no sense, you'd be wasting the two middle adjustment points.
A descending dominant curve makes no sense, as it will make more noise than necessary.

Here are examples. You might of course have to use different values, but just to see how it should rougly look like. The curve needs to be done for your particular fans.

This is for a PWM fan (4-pin), which is controlled by a PWM % signal:

BIOS_Fan1.png


I would always prefer "Temperature source" CPU for the CPU fan(s), and probably most other fans too.
Usually, the CPU temperature is the most important one, and will influence the other temperatures.
Step down time 1.0s makes the fans spin down less audibly.

However, it's also feasible use "Temperature source" System for case fans. Here's an example for a DC (voltage-controlled) 3-pin fan.
Note: The following picture is not how it should be set when using the CPU temperature as the source (which is the usual temperature source),
it's an example of a fan curve when using the System temperature as the source, which could be done for case fans.
When using CPU temperature as the source, the fan curve should not be this steep, it should be more like the pictures above.

MSI_SnapShot_24 Fan4.png


Of the five total fans in my PC (two on the CPU cooler, three in the case), this lower front intake fan is the only one for which i use the "System" Temperature Source. I want it to react to the system temperature with a steeper curve, since the system temperature will obviously increase much more slowly than the CPU temperature. The graphics card can be a major contributor to heating up the whole system, and since i can't use a graphics card sensor as the temperature source, this is sort of a roundabout way to handle that. Of course, you can also have the CPU as the temperature source for all the fans, then you should use a shallower curve like in the pictures before this one.

Here's a 4-pin system fan (in my case, a Noctua NF-A14 PWM) with the CPU as the temperature source:

23 Fan3 BIOS 1.D0 MSI_SnapShot_23.png


In my system, the CPU temperature actually stays very low under load, since i have a mid-range CPU and a high-end CPU cooler. Therefore, even for the system/case fans, i can set this steep of a fan curve and not worry about getting jet engine noises under load, it will still stay pretty quiet. Depending on the individual configuration, it might be better to have the system fans on less steep of a curve compared to the CPU fan(s), just so the noise is less annoying under load. It all depends on your setup, what kind of fans you have, and noise/temperature preference.

When you have a graphics card (GPU) with a pretty high power draw, and/or there will be a lot of gaming done on the PC, then it's also a good idea to observe the various temperatures during a stint of gaming, running HWinfo Sensors in the background, set up as mentioned in step 1) of this guide with the sensors expanded. Because apart from the CPU temperatures, the GPU and other temperatures (SSD, RAM, System...) are of course also important. A GPU can take quite high temperatures, and for some cards it's not unusual or concerning to see high 80°C there under load, that can be pretty normal. But it shouldn't cause excessive temperatures for other parts. So while thinking about achieving a good balance of temperatures vs. noise, it's good to keep the entire system in mind, for example in a gaming scenario, and not only test full CPU load.


Each fan model has a different RPM range and therefore needs different values or voltages to reach a certain airflow. Also, each different PWM-controlled fan model can interpret the PWM signal differently. This is because some mainboards don't allow a PWM signal lower than 20% for example, to never have the fan turn off. So to circumvent that, a fan maker might decide to let the fan interpret a 20% PWM signal from the mainboard as "still turned off", and turn on at 21% PWM. Another fan might interpret 0% PWM as the turn off signal and 1% as the lowest possible RPM, or may never turn off and just map the entire PWM signal range to the lowest and highest RPM. And all variations in between.

Here's an example of an Arctic fan which has implemented a semi-passive mode, it stays off with any PWM signal below 5%:

P12-PWM-PST-Argb-0dB-Mode-EN.jpg


These Arctic P12/P14 PWM PST are very good fans by the way, almost unbeatable in price/performance.

Another example of a fan with a semi-passive mode is this Noiseblocker one, which has the following PWM-signal-to-fan-speed mapping (depending on the variant):

Screenshot 2023-06-27 at 21-58-11 TData_eloopX120_de_en.cdr - TData_eloopX120_de_en.pdf.png


So for each fan model, you will need different PWM values (and for 3-pin ones, different voltages), but just go by airflow and noise.
And the concept of the fan curve is always the same.

Once you're done, it's a good idea to write down your settings or make a screenshot/picture of them (in the BIOS, F12 saves a screenshot to a FAT32-formatted USB drive).
Because whenever the BIOS settings are reset (due to BIOS update, CMOS Clear or empty battery), you'll need your notes or pictures to know what fan curves you had before.
Although in BIOS updates for newer boards, the fan curves are actually kept between updates nowadays, which is good.

My other guides:
RAM explained: Why two modules are better than four / single- vs. dual-rank / stability testing

Guide: How to set good power limits in the BIOS and reduce the CPU power draw
Guide: How to find a good PSU

Someone asked me if they can thank me for my work by sending me something via Paypal: Yes, that's possible, just write me a message and i'll tell you my Paypal 😉
 
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Oh wasn't aware of that 👀
But since I want to spare me the hellish cable management as is I've just went with the non RBG ones,

Will mess with them once they will arrive.
 
When im in MSI ADVANCED CLICK BIOS only allowed some reason because i switched the motherboard to a beta copy latest model firmware, cause the picture showed how to setup the curves at dots listed in the second photo system fan (DC or PWM) i have both of those, so i realistically did not know the curve in bios had to be manually entered and figure out how to add the fans rpm in bios was the worst experience cause it said if i put it in the correct mode IE DC the voltages are needed to know to type the rpm correctly to get pwm matched, i figured the part would show me the exact rpm it goes to to set the correct rpm number out of intake fan triple header on one, the number fluctuates if i add a dc on pwm and dc on dc plug to system fan header, i get a lower number on DC rather than full ramp up pwm, in bios i just left it as 3 pin cause thats what the non adapter part is not like a pwm adapter to four pin header plug which im using. Cause i typed in the values to match the intakke bottom flow the rpm is exactly the same in system, MSI center bios mode i get 1000rpm matched for 5 fans intake, however could you help me setup my exhaust AIO 140mms to bios please explain how i can make the top AIO fans adjust to its needed curve, And Please explain a new curve for the GPU inside windows 11 software matched the current system speed of intake and exhaust. IS Fixed curve good for GPU software? or the same question For AIO to reach a needed rpm of 1000 intake right now, which is pretty loud and i want to make it under 30-40 which the cpu is 46.88 c under idle
 
Ok, that was a bit difficult to read, but let's see if i can answer some things here.

the number fluctuates if i add a dc on pwm and dc on dc plug to system fan header, i get a lower number on DC rather than full ramp up pwm,

Yes, if you have a 3-pin fan, it needs to be DC- (voltage-) controlled, not with a PWM signal. PWM control only works with 4-pin fans. If you try to send a PWM signal to a 3-pin fan, it doesn't have the fourth wire for it and it will just stay at the full 12V, so it will spin at maximum RPM.

You only ever set the voltage (3-pin) or PWM percentage (4-pin), never the RPM directly, that's impossible because each fan model behaves differently. Also, different fans perform differently at the same RPM, if you compare things like airflow, static pressure, noise and so on (important parameters for fan performance). One fan at 1000 RPM has different results than another model of fan also at 1000 RPM.

MSI center bios mode i get 1000rpm matched for 5 fans intake,

1000 RPM for what? Idle / in the BIOS? That's a bit much. As you may have seen on the screenshots in the first post, my fans are below 500 RPM in idle. Because think about it, why would you need a lot of airflow in idle? Nothing is getting hot, so all it does is create more airflow and noise than necessary in that situation, and cause more dust buildup in the system over time. So that's why you would set a fan curve, to have peace and quiet when there's nothing going on anyway, and then the fans can ramp up to higher speeds if the CPU gets hot under load.

however could you help me setup my exhaust AIO 140mms to bios please explain how i can make the top AIO fans adjust to its needed curve,

What's your AIO model? Where are the fans connected?

And Please explain a new curve for the GPU inside windows 11 software matched the current system speed of intake and exhaust. IS Fixed curve good for GPU software?

Fixed fan speeds aren't good for much. Also you don't need to match any other fan's speeds, the GPU fans are quite different from case fans. Basically you need to get away from the fixation of a certain RPM, and look more of the temperatures and the noise. Normally, if you bought a GPU with a good cooler, then you can leave its fan curve exactly as it is from factory. If the GPU fans are too annoying for you, or they switch on and off a lot under certain load, then you may have to set a custom fan curve for them. I would orient myself at the existing fan curve, just tweak it in some important places.

or the same question For AIO to reach a needed rpm of 1000 intake right now, which is pretty loud and i want to make it under 30-40 which the cpu is 46.88 c under idle

47°C would be very high for an Intel CPU in idle, maybe less unusual for an AMD CPU. So you see, i first need to know all your hardware in detail if you want me to help you in detail. Maybe also a photo of your system, so i can see where the fans and coolers are. Otherwise it's difficult to make specific recommendations. The only thing i can tell you already, 1000 RPM in idle, there is no need for that, it should start lower.
 
1. Setting the rpm in bios was listed as the only option if i turn on smart fan mode there i set up each dot manually -1. 28c at 29% rpm of 1200 for intake fan dot + 3 others up to 60c at 95% and on the other pwm fans i got the same reading in msi center running in bios rpm smart fan mode changes for system headers. however, you see it has a voltage adjustment for dc smart fan control, and from my bios i have 10mv adjusting to add for that fan curve and ive messed with it many times but followed the guide in the photo of this thread i seem to get a solid match with the other pwm fans but i have to fix the problem with software in msi center meaning i wont reduce it cause i just want it to equal the other or adjust it to certain temperatures. reducing the software makes it low but it cant reduce by smart fan mode permanent cause i run it on cooling wizard secondary in the past. thats for #1 question
 
#4 Automatically the fan on gpu never lets the 50C mark above, ive made a couple and temperature in case gets better all the curves, just dont like the 50c mark and up cause the zero db kicks in with the build in software mode, so i tried to move its three dots always at 1100 rpms and up from the bottom dot to 71% max
 
#5 Im not sure i understand the AIO temperature and the Processor temperature cause they have them in the aio software and msi center is reading teh processor temperature as the aio Processor temperature reading, above 17 degrees more different though at idle 49.99 degrees with the aio going low rpm 500 or so, and intake running 1000, ill cahnge the idle in msi center ? or bios msi ?>
 
Ok, that was a bit difficult to read, but let's see if i can answer some things here.



Yes, if you have a 3-pin fan, it needs to be DC- (voltage-) controlled, not with a PWM signal. PWM control only works with 4-pin fans. If you try to send a PWM signal to a 3-pin fan, it doesn't have the fourth wire for it and it will just stay at the full 12V, so it will spin at maximum RPM.

You only ever set the voltage (3-pin) or PWM percentage (4-pin), never the RPM directly, that's impossible because each fan model behaves differently. Also, different fans perform differently at the same RPM, if you compare things like airflow, static pressure, noise and so on (important parameters for fan performance). One fan at 1000 RPM has different results than another model of fan also at 1000 RPM.



1000 RPM for what? Idle / in the BIOS? That's a bit much. As you may have seen on the screenshots in the first post, my fans are below 500 RPM in idle. Because think about it, why would you need a lot of airflow in idle? Nothing is getting hot, so all it does is create more airflow and noise than necessary in that situation, and cause more dust buildup in the system over time. So that's why you would set a fan curve, to have peace and quiet when there's nothing going on anyway, and then the fans can ramp up to higher speeds if the CPU gets hot under load.



What's your AIO model? Where are the fans connected?



Fixed fan speeds aren't good for much. Also you don't need to match any other fan's speeds, the GPU fans are quite different from case fans. Basically you need to get away from the fixation of a certain RPM, and look more of the temperatures and the noise. Normally, if you bought a GPU with a good cooler, then you can leave its fan curve exactly as it is from factory. If the GPU fans are too annoying for you, or they switch on and off a lot under certain load, then you may have to set a custom fan curve for them. I would orient myself at the existing fan curve, just tweak it in some important places.



47°C would be very high for an Intel CPU in idle, maybe less unusual for an AMD CPU. So you see, i first need to know all your hardware in detail if you want me to help you in detail. Maybe also a photo of your system, so i can see where the fans and coolers are. Otherwise it's difficult to make specific recommendations. The only thing i can tell you already, 1000 RPM in idle, there is no need for that, it should start lower.
I sent above this message a lot of other info
 
1. Setting the rpm in bios was listed as the only option if i turn on smart fan mode there i set up each dot manually -1. 28c at 29% rpm of 1200 for intake fan dot + 3 others up to 60c at 95% and on the other pwm fans i got the same reading in msi center running in bios rpm smart fan mode changes for system headers. however, you see it has a voltage adjustment for dc smart fan control, and from my bios i have 10mv adjusting to add for that fan curve and ive messed with it many times but followed the guide in the photo of this thread i seem to get a solid match with the other pwm fans but i have to fix the problem with software in msi center meaning i wont reduce it cause i just want it to equal the other or adjust it to certain temperatures. reducing the software makes it low but it cant reduce by smart fan mode permanent cause i run it on cooling wizard secondary in the past. thats for #1 question

If you read this back yourself, does it seem easy to read? It would be better if you used more punctuation and made a paragraph here and here. But again, i will see what i can answer for you.

I'm not exactly sure what the issue is here. Are you saying, you're using the BIOS fan control, but then in Windows you also set something via MSI Center? At the end you say that's the first question, but where is the question? I'm sorry, but you're gonna have to rephrase this for me, i don't quite understand this one.

#3 My AIO model is corsair H115i Pro 280mm the fans are connected to CPUfan1 slot with a three pin aio connector.

Where's the second question, did i miss it? You can write everything in one post, just use paragraphs between the different questions / points you make (press the return key twice to make an empty line in between, as follows).

Anyway, are those 4-pin fans going onto a 2x 4-pin to 1x 3-pin adapter cable, or 2x 3-pin to 1x 3-pin?

#4 Automatically the fan on gpu never lets the 50C mark above, ive made a couple and temperature in case gets better all the curves, just dont like the 50c mark and up cause the zero db kicks in with the build in software mode, so i tried to move its three dots always at 1100 rpms and up from the bottom dot to 71% max

For your graphics card, just below 50°C is completely normal in idle for the GPU, there is no need to start the fans at this temperature. This is a powerful card, and GPUs can easily take a lot of heat, 50°C is nothing. Spinning the fans in idle just so your GPU (chip temperature) is at 35°C, like you do now, it's not necessary at all. The hotspot temperature on your screenshot, it's called hotspot for a reason. Don't look at this temperature thinking you need to cool it down. Gigabyte selected a certain point for the fans to come on, because below that point, the GPU is perfectly fine without airflow.

#5 Im not sure i understand the AIO temperature and the Processor temperature cause they have them in the aio software and msi center is reading teh processor temperature as the aio Processor temperature reading, above 17 degrees more different though at idle 49.99 degrees with the aio going low rpm 500 or so, and intake running 1000, ill cahnge the idle in msi center ? or bios msi ?>

Well, you have a CPU temperature, and you have a coolant temperature (the liquid inside the AIO's loop). The CPU will be hotter than the coolant. If your fans are connected to the motherboard's headers, set their fan curve in the BIOS. The Corsair software, you can control what's connected to the Corsair. I think the pump has its own two fan cables, then you could control the radiator fans through the Corsair software if you wanted to. But in the BIOS should be good for those fans too.

I sent above this message a lot of other info

Yes, i saw. For your next reply, please put everything into one post. Not one long sentence, but with some more structure, that would be good. 👍
 
Appreciate the guiding help making the paragraphs here:
I'd setup the smart fan control pins like most people by entering them in via bios - each would be 1 -4 pwm and #3 system mobo DC header, intake on case only, making same curve on CPU selection four point curve in bios. I dont understand point of doing a cpu fan curve with 2 exhaust fans setup on 4-pin fans going onto a 2x 4-pin to 1x 3-pin adapter cable on MOBO. they are not very high rpm and settings on SYSTEM SOFTWARE were better with fixed speeds to get medium idle cooling temps, running the intake higher of course made the system all cool, + GPU running min speed. Likely followed a guide on instruction putting the aio in and made curves recently on software however the pump was not recognized in the mobo software in windows, just CPU FAN and that works only. COrsair makes the software in tuning and i cant complain it works when i need to keep idle or medium game sessions.

Yes i see the fan control on gpu temperatures get around 14c more with it off to perform the gigabyte operation, having it zerodb is fine but it kicks on at 1100 that is fine automatically kick ing on and on during idle?

Yes the pump has its own two fan cables going into CPufanheader 1, i understand it as mentioned about the corsair making the fan software to tweak as needed. does it need to be on curve to operate those in bios and inside pc altogether?
 
I dont understand point of doing a cpu fan curve with 2 exhaust fans setup on 4-pin fans going onto a 2x 4-pin to 1x 3-pin adapter cable on MOBO.

Aha, so it is 2x 4-pin into 1x 3-pin. I would connect them both seperately, directly to the board, if you want to control them better in the BIOS.
Your board has six fan headers, all of them can use DC or PWM control:

Screenshot 2024-12-17 at 00-30-25 E7C02v1.4-GSE-LITE.pdf.png



PWM control is the superior way, if you have 4-pin fans. Of course, on the Y-adapter-cable, it doesn't work, since it's 3-pin. So you can also think about putting the two radiator fans of the AIO onto the two fan cables that the pump offers. Then you cannot control those radiator fans in the BIOS anymore (since they are not on any of the board's fan headers), but on the other hand, then you can control them with the Corsair software instead.

I dont understand point of doing a cpu fan curve with 2 exhaust fans setup on 4-pin fans going onto a 2x 4-pin to 1x 3-pin adapter cable on MOBO. they are not very high rpm and settings on SYSTEM SOFTWARE were better with fixed speeds to get medium idle cooling temps, running the intake higher of course made the system all cool, + GPU running min speed.

You have to get away from trying to lower idle temperatures everywhere. They are not really that important. AMD CPUs tend to run hotter in idle than Intel. If you want low idle temperatures, then Intel is better, but even there it doesn't matter too much. Temperatures under load matter more.

Trying to get the system to run cooler in idle, including the GPU, won't have any benefits (unless it's really hot for some reason, but then something is fundamentally wrong with the cooling). In idle you only need very little airflow, because everything has a low power draw, so not much airflow is needed to get rid of that lukewarm air. This will keep the noise down.

the pump was not recognized in the mobo software in windows, just CPU FAN and that works only.

Forget MSI Center, it's not useful for much. Use your Corsair software, that does seem to provide a good overview. MSI Center cannot see what the pump is doing because the pump probably gets only SATA power from the board, and then the AIO is connected via USB to the board, to communicate with the Corsair software. But MSI Center only looks at what's on the fan headers. It doesn't check for stuff that needs a USB connection.

Yes i see the fan control on gpu temperatures get around 14c more with it off to perform the gigabyte operation, having it zerodb is fine but it kicks on at 1100 that is fine automatically kick ing on and on during idle?

If the GPU's fans come on and off a lot during idle, because the threshold for the fans to turn on is right around that idle temperature, then it's better to adjust the curve to prevent them turning on too soon. Slightly raise the temperature at which they come on. If it's only idle or watching videos or so, they should stay off, that's the goal. Only in gaming, they need to actively cool the GPU.

If you somehow prefer the fans to run all the time (although it doesn't really have an advantage), then use the lowest speed they are capable of, for up to 50°C or so (GPU temperature, not hotspot!). But like i said, GPUs, especially powerful ones like yours, they will be a bit warmer in idle, nothing to worry much about. But yes, if the fans do this on/off thing a lot in idle, you need the change the curve a bit, then the default curve isn't that well-adjusted.
 
Aha, so it is 2x 4-pin into 1x 3-pin. I would connect them both seperately, directly to the board, if you want to control them better in the BIOS.
Your board has six fan headers, all of them can use DC or PWM control:

View attachment 196634


PWM control is the superior way, if you have 4-pin fans. Of course, on the Y-adapter-cable, it doesn't work, since it's 3-pin. So you can also think about putting the two radiator fans of the AIO onto the two fan cables that the pump offers. Then you cannot control those radiator fans in the BIOS anymore (since they are not on any of the board's fan headers), but on the other hand, then you can control them with the Corsair software instead.



You have to get away from trying to lower idle temperatures everywhere. They are not really that important. AMD CPUs tend to run hotter in idle than Intel. If you want low idle temperatures, then Intel is better, but even there it doesn't matter too much. Temperatures under load matter more.

Trying to get the system to run cooler in idle, including the GPU, won't have any benefits (unless it's really hot for some reason, but then something is fundamentally wrong with the cooling). In idle you only need very little airflow, because everything has a low power draw, so not much airflow is needed to get rid of that lukewarm air. This will keep the noise down.



Forget MSI Center, it's not useful for much. Use your Corsair software, that does seem to provide a good overview. MSI Center cannot see what the pump is doing because the pump probably gets only SATA power from the board, and then the AIO is connected via USB to the board, to communicate with the Corsair software. But MSI Center only looks at what's on the fan headers. It doesn't check for stuff that needs a USB connection.



If the GPU's fans come on and off a lot during idle, because the threshold for the fans to turn on is right around that idle temperature, then it's better to adjust the curve to prevent them turning on too soon. Slightly raise the temperature at which they come on. If it's only idle or watching videos or so, they should stay off, that's the goal. Only in gaming, they need to actively cool the GPU.

If you somehow prefer the fans to run all the time (although it doesn't really have an advantage), then use the lowest speed they are capable of, for up to 50°C or so (GPU temperature, not hotspot!). But like i said, GPUs, especially powerful ones like yours, they will be a bit warmer in idle, nothing to worry much about. But yes, if the fans do this on/off thing a lot in idle, you need the change the curve a bit, then the default curve isn't that well-adjusted.
Thanks, id probably work the idle as you discussed with it making noise every minute wierd the noise of one of the three turning on like in icue you see the temperature of one gets hot and the other two are hotter meaning its not pulling the same speed when its in zero db mode on Control center for gigabyte it said it pulls zero with the fan turning and making sure its connected to speed it reads, idle or hot is specifically in 40-50 c idle and 60-80 c hot?

I think ill copy the formula for the PWM connectors on the two fans which makes more sense now, ill try that out and let you know if the bios reacts with no software but ill open a program this time like hwinfomontor, I only did not get the pump_ header for its purpose but that helps out the diagram image! Setting the system to all the same hardware monitor spec temperature Dots is my next job as the pump header+CPU header, thank you.
 
Aha, so it is 2x 4-pin into 1x 3-pin. I would connect them both seperately, directly to the board, if you want to control them better in the BIOS.
Your board has six fan headers, all of them can use DC or PWM control:

View attachment 196634


PWM control is the superior way, if you have 4-pin fans. Of course, on the Y-adapter-cable, it doesn't work, since it's 3-pin. So you can also think about putting the two radiator fans of the AIO onto the two fan cables that the pump offers. Then you cannot control those radiator fans in the BIOS anymore (since they are not on any of the board's fan headers), but on the other hand, then you can control them with the Corsair software instead.



You have to get away from trying to lower idle temperatures everywhere. They are not really that important. AMD CPUs tend to run hotter in idle than Intel. If you want low idle temperatures, then Intel is better, but even there it doesn't matter too much. Temperatures under load matter more.

Trying to get the system to run cooler in idle, including the GPU, won't have any benefits (unless it's really hot for some reason, but then something is fundamentally wrong with the cooling). In idle you only need very little airflow, because everything has a low power draw, so not much airflow is needed to get rid of that lukewarm air. This will keep the noise down.



Forget MSI Center, it's not useful for much. Use your Corsair software, that does seem to provide a good overview. MSI Center cannot see what the pump is doing because the pump probably gets only SATA power from the board, and then the AIO is connected via USB to the board, to communicate with the Corsair software. But MSI Center only looks at what's on the fan headers. It doesn't check for stuff that needs a USB connection.



If the GPU's fans come on and off a lot during idle, because the threshold for the fans to turn on is right around that idle temperature, then it's better to adjust the curve to prevent them turning on too soon. Slightly raise the temperature at which they come on. If it's only idle or watching videos or so, they should stay off, that's the goal. Only in gaming, they need to actively cool the GPU.

If you somehow prefer the fans to run all the time (although it doesn't really have an advantage), then use the lowest speed they are capable of, for up to 50°C or so (GPU temperature, not hotspot!). But like i said, GPUs, especially powerful ones like yours, they will be a bit warmer in idle, nothing to worry much about. But yes, if the fans do this on/off thing a lot in idle, you need the change the curve a bit, then the default curve isn't that well-adjusted.
So i had another reply as of curtosy to the motehrboard picture under this comment - the AIO i have won't give me a y -adapter splitter its standard on the aio that includes a built in cable to the center cooler and it hooks up the two pin connectors for control of fans, so i cant just plug the included three pin DC connector that is also on the aio module into one? undertsanding it works in icue and it doesnt in bios but the three is dc so should i connect that aio connector the only one supplied besides sata and usb directly in motherboard or no? I have been using the cpu_fan header and the picture wont work cause its three connectors that go in the motherboard to get the bios support. H115i pro model, the board did not get either fans plugging in to cpu-fan 1 and pump fan 1 connector pwm mode and the three pin disconnected.
 
Thanks, id probably work the idle as you discussed with it making noise every minute wierd the noise of one of the three turning on like in icue you see the temperature of one gets hot and the other two are hotter meaning its not pulling the same speed when its in zero db mode on Control center for gigabyte it said it pulls zero with the fan turning and making sure its connected to speed it reads, idle or hot is specifically in 40-50 c idle and 60-80 c hot?

40-50°C GPU temperature in idle is normal for your card. Just prevent the fans from spinning up periodically in idle, by setting a higher temperature for the fans to turn on. Or set a very low fan curve for such temperatures, if you rather have the fans running constantly.

So i had another reply as of curtosy to the motehrboard picture under this comment - the AIO i have won't give me a y -adapter splitter its standard on the aio that includes a built in cable to the center cooler and it hooks up the two pin connectors for control of fans, so i cant just plug the included three pin DC connector that is also on the aio module into one? undertsanding it works in icue and it doesnt in bios but the three is dc so should i connect that aio connector the only one supplied besides sata and usb directly in motherboard or no? I have been using the cpu_fan header and the picture wont work cause its three connectors that go in the motherboard to get the bios support. H115i pro model, the board did not get either fans plugging in to cpu-fan 1 and pump fan 1 connector pwm mode and the three pin disconnected.

For me, i want to see all fans individually, even if i set them to the same fan curve. This way, i can see in HWinfo what is going on at all times, all fans are shown.

For your AIO, the best you can do is to experiment where you connect the fans. Connect it in a different way and see which way you like best. One way will probably allow to you set all the fan curves in the BIOS, and the other way will require the Corsair software. This is specific to your AIO, so i can't really give good recommendations without sitting in front of that system and seeing how it all works together. I can only give advice how i would set up a fan curve. I hope you got enough information about that now to come up with a good configuration.
 
Aha, so it is 2x 4-pin into 1x 3-pin. I would connect them both seperately, directly to the board, if you want to control them better in the BIOS.
Your board has six fan headers, all of them can use DC or PWM control:

View attachment 196634


PWM control is the superior way, if you have 4-pin fans. Of course, on the Y-adapter-cable, it doesn't work, since it's 3-pin. So you can also think about putting the two radiator fans of the AIO onto the two fan cables that the pump offers. Then you cannot control those radiator fans in the BIOS anymore (since they are not on any of the board's fan headers), but on the other hand, then you can control them with the Corsair software instead.



You have to get away from trying to lower idle temperatures everywhere. They are not really that important. AMD CPUs tend to run hotter in idle than Intel. If you want low idle temperatures, then Intel is better, but even there it doesn't matter too much. Temperatures under load matter more.

Trying to get the system to run cooler in idle, including the GPU, won't have any benefits (unless it's really hot for some reason, but then something is fundamentally wrong with the cooling). In idle you only need very little airflow, because everything has a low power draw, so not much airflow is needed to get rid of that lukewarm air. This will keep the noise down.



Forget MSI Center, it's not useful for much. Use your Corsair software, that does seem to provide a good overview. MSI Center cannot see what the pump is doing because the pump probably gets only SATA power from the board, and then the AIO is connected via USB to the board, to communicate with the Corsair software. But MSI Center only looks at what's on the fan headers. It doesn't check for stuff that needs a USB connection.



If the GPU's fans come on and off a lot during idle, because the threshold for the fans to turn on is right around that idle temperature, then it's better to adjust the curve to prevent them turning on too soon. Slightly raise the temperature at which they come on. If it's only idle or watching videos or so, they should stay off, that's the goal. Only in gaming, they need to actively cool the GPU.

If you somehow prefer the fans to run all the time (although it doesn't really have an advantage), then use the lowest speed they are capable of, for up to 50°C or so (GPU temperature, not hotspot!). But like i said, GPUs, especially powerful ones like yours, they will be a bit warmer in idle, nothing to worry much about. But yes, if the fans do this on/off thing a lot in idle, you need the change the curve a bit, then the default curve isn't that well-adjusted.
awesome help that solved the threshold on the curve altered change found idle out. some temps run on three fans are warm, very new to me, but i get the next curve after that too, one in the orange (max) would be full speed for temp above 90c unequally on the fan readings max?
 
40-50°C GPU temperature in idle is normal for your card. Just prevent the fans from spinning up periodically in idle, by setting a higher temperature for the fans to turn on. Or set a very low fan curve for such temperatures, if you rather have the fans running constantly.



For me, i want to see all fans individually, even if i set them to the same fan curve. This way, i can see in HWinfo what is going on at all times, all fans are shown.

For your AIO, the best you can do is to experiment where you connect the fans. Connect it in a different way and see which way you like best. One way will probably allow to you set all the fan curves in the BIOS, and the other way will require the Corsair software. This is specific to your AIO, so i can't really give good recommendations without sitting in front of that system and seeing how it all works together. I can only give advice how i would set up a fan curve. I hope you got enough information about that now to come up with a good configuration.
I guess the question is how hot you expect the gpu to run without its fan?
 
40-50°C GPU temperature in idle is normal for your card. Just prevent the fans from spinning up periodically in idle, by setting a higher temperature for the fans to turn on. Or set a very low fan curve for such temperatures, if you rather have the fans running constantly.



For me, i want to see all fans individually, even if i set them to the same fan curve. This way, i can see in HWinfo what is going on at all times, all fans are shown.

For your AIO, the best you can do is to experiment where you connect the fans. Connect it in a different way and see which way you like best. One way will probably allow to you set all the fan curves in the BIOS, and the other way will require the Corsair software. This is specific to your AIO, so i can't really give good recommendations without sitting in front of that system and seeing how it all works together. I can only give advice how i would set up a fan curve. I hope you got enough information about that now to come up with a good configuration.
I can only give advice how i would set up a fan curve.- PERFECT about the fan curve question might i see a snapshot as im changing those constantly IE running the RPM for 140mm and 120mm fans on system, which im using bottom 140s top 140s and front 120s, and they are either way off or just not set up to bios like the top aio.
I can only give advice how i would set up a fan curve.- PERFECT about the fan curve question might i see a snapshot as im changing those constantly IE running the RPM for 140mm and 120mm fans on system, which im using bottom 140s top 140s and front 120s, and they are either way off or just not set up to bios like the top aio.
 
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