Need a pc wizard

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Dec 8, 2024
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I am using Z790 tomahawk max Wi-Fi with corsair vengeance DDR 5 Ram 32gb intel i7 14700k ASUS tuf 4090 oc ASUS tuf 1000w gold power supply and Samsung 980 pro nvme ssd and got the pc built at Best Buy and when I picked it up he told me that he tried enabling expo or exp and the pc crashed so ram is running at default 4800 instead of 6000 and was wondering how I could get this working properly. Also I am wondering if my cooler is good enough for the cpu it’s a GA Trinity 2 360.
 
Well, i can only write English and hope that people can read it properly and understand me.

Here is an example for a system fan aka case fan:

23 Fan3 BIOS 1.D0 MSI_SnapShot_23.png


Starting / leftmost point at 35°C with relatively low speed, gradually increasing, ending with 100% speed at 90°C. Now, this is because i use a big cooler on a relatively frugal CPU in my system, so it never actually gets near 90°C. When you actually have a monster CPU like the 14th gen i7 which can push even good coolers to their limit, you want the fans on the AIO's radiator to go to full speed for sure, but maybe not all system fans as well, because that would create an orcane-like noise if all fans went to 100%. But you can decide that, you can also change it later. For now, you can set up all the fans something similar to this.

I notice that all your case fans / system fans are set to DC voltage control instead of PWM control. You should try setting it to PWM on the left, like you see on my picture, and see if they still respond to the fan curve, or if they go to full speed. If they respond to PWM control, that's the superior way of controlling them. Then you can set everything similar as on my picture.

The pump unit of the AIO is a bit of an exception. Like i said, it will have much higher RPM, it will have a narrower range of speeds, and it will not contribute much to the noise. So for that pump only, you can use a different curve, one that stays a bit higher for all the points, but still goes to 100% for 90°C.
 
Hmm, why would you set them to full speed? I only mentioned to try PWM control instead of DC control. The checkmarks on the left middle, left of the curve.
 
I sent them the full speed to figure out which one controlled what fan but it seems like all four showing only control the radiator. I have no way of controlling the front case fans or the one back fan
 
Oh ok. So they may have put the cables of the AIO's pump and the three radiator fans onto the board's headers individually. Often times they would daisy-chain them to a single fan header. Anyway, both is ok. But then how are the case fans controlled? Through some Windows software perhaps? Your motherboard should have enough headers to put everything on the board, then you'd have full control in the BIOS. Maybe they used some fan controller because the case came with one? Can you check inside the PC, the cables from your front and rear case fans, where they are going?

If what we are seeing here are the three radiator fans on CPU_FAN + SYS_FAN 5 + 6, then those would definitely all be on the same fan curve, and PWM-controlled would be the right method. You can see this by the fans' speed going down again when you select PWM. That means, they react to it (otherwise they would just stay at full speed), and PWM is the method to use.

I would set CPU_FAN and SYS_FAN 5 + 6 to the exact same fan curve, similar to the one i posted above. Then what's on PUMP_FAN is not a fan, but the actual water pump of the AIO. This has different requirements, the curve doesn't matter too much, it should only go to 100% at high CPU temperatures.

Then we should see if you can't put all the case fans on the board's fan headers too. I mean, you have SYS_FAN 1-4 still available.

Screenshot 2024-12-09 at 00-06-00 MAGZ790TOMAHAWKMAXWIFI_EN.pdf.png
 
Yes, so they all understand PWM signals for the speed. but you have a special bunch of case fans here. They are daisy-chained without cables, and then they connect to the internal USB header on the board, to use the special Lian Li software in Windows.

Check here: https://lian-li.com/product/uni-fan-sl-infinity/

By setting this in their software, you could overrule the software control and have the BIOS set the fan curves instead:

Screenshot 2024-12-09 at 02-14-38 UNI FAN SL-INF - LIAN LI is a Leading Provider of PC Cases C...png



But you should definitely have this software installed in Windows if Best Buy did their stuff right. So check in there and see what fan curves are set for them, maybe it's ok to just use this software and not set this in the BIOS.
 
Yes, it all connects to one of the two internal USB 2.0 headers on the board. Then to control those fans, they needed to install the L-Connect 3 software from the link in my last post. So another thing they have dropped the ball on. This would be the first and last PC i've let them buld for me if i were you. It's easier to fix some of the mess yourself. About the RAM, we'll have to see, maybe that one will be on them to fix properly (by replacing the kit with a different one that works at XMP).

Anyway, download the L-Connect 3 software from the link, then you should be able to either control the fans in there, or enable that one setting that makes them hopefully appear and be controllable in the BIOS, either one is ok. With no software, there is probably no fan curve active for them, meaning they're on a constant speed, which is not how it's done anymore. In idle you want them at very low speed. When the CPU is working overtime, you want them to create more airflow through the case.
 
So I installed L connect, but the app is only showing up and they installed applications. I can’t find it anywhere else on the computer are supposed to be a desktop shortcut, but it didn’t create one.
 
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