Bug: z690 motherboard applies cpu fan voltage too slow. delayed spin up. Do other MSI boards have same issue?

pman62

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My cpu fan has max 2000rpm.

Testing with MSI Center manual fan control, there is a 7 seconds delay before the fan will even spin up.

and when it starts to spin up, the fan takes 20 seconds to reach max rpm, even as I call for 100% voltage.
This is the same behavior when the fan is in auto mode, when there is a cpu load.

When I go to manual fan control tab, the fan should spin up right way. It does not.

There has to be a way to hack the bios to deliver instant voltage to the fans.

When cpu is put under 100% load, look at how long it takes to spin from 800rpm to 2000rpm, which is lowest speed to max speed....
Every step up is 1 second ! It takes about 16 seconds to spin up the fan.
The bios is set to level up the fan speed with 0.1s delay, but this is a whole 1 second delay !

The bios fan control delay needs to be fixed.

msicenter.png


Watch this video I recorded. Notice the RPM and the amount of time that passes. ....
 
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zerijelly

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Mego

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As mentioned in other post, I have the same issue with my Z690 Unify-X. From 0 RPM to full speed, it takes say 5-7 seconds before the fan "wakes up", then another 20 seconds or more before it reaches full speed. Its as if the fan header is getting voltage very gradually and slowly, because the software is asking 100%. Same story within the BIOS itself, which means its NOT related to any windows or software within windows. Its either the BIOS or some controller
 

pman62

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Have MSI Center updated to the latest version v. 1.0.40.0? https://www.msi.com/Motherboard/MEG-Z690-GODLIKE/support#down-driver&Win10 64
Please provide full system configuration according to the posting guide: https://forum-en.msi.com/index.php?threads/posting-guide.38822/
It takes time for fan to spin up to designated speed percentage, as from smart fan mode, the CPU temperature is way low that the fan is 0 RPM.
like mego and i said here, there is an obvious delay in getting the fan to spin up.

has nothing to do with MSI center version.

I set my fan to 0rpm under 58c.

my specs are in my sig.... MSI pro-A z690 ddr4, 12600k
 
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pman62

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how do you explain this?

Even though I set the fan curve to shoot up vertically, look at how long the cpu fan took to spin up anyway. (green stair step diagonal line)...

When you boot up a pc, the fan will spin up very fast for a moment, so you know the fan is capable.
asdfasdfsadf.png



Customer support is pretty useless.
Is this forum the only place for software fixes?
 
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Mego

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I have a ticket opened with Support. They said to "RMA" the board. Am gonna send it back since its within the 30 days of purchase.
 

Mego

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how do you explain this?

Even though I set the fan curve to shoot up vertically, look at how long the cpu fan took to spin up anyway. (green stair step diagonal line)...

When you boot up a pc, the fan will spin up very fast for a moment, so you know the fan is capable.
View attachment 157406


Customer support is pretty useless.
Is this forum the only place for software fixes?
Thats pretty much my behavior. The question is, is it widespread on all MSI Z690 boards or is it certain boards which have a bad controller chip? Since the fans actually do spin, its hard for others to realize yet this is happening, including reviewers.
 

pman62

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I have a ticket opened with Support. They said to "RMA" the board. Am gonna send it back since its within the 30 days of purchase.
that's a cookie cutter response. they don't know what they're talking about.

RMA is not gonna fix this, because all same model MSI boards will have this problem, since they all use the same controller.

I wish the MSI hackers here would have a response to this.
 

Mego

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that's a cookie cutter response. they don't know what they're talking about.

RMA is not gonna fix this, because all same model MSI boards will have this problem, since they all use the same controller.

I wish the MSI hackers here would have a response to this.
Well am surprised that ALL reviewers and OCers who own this board did not point or find this out. It could also be that some random boards only have that defective controller. A bit like the Asus Hero story, where only some boards that the mofset reversed...
 

pman62

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my Asrock Z690 Pro RS board can spin up the fan from 0-2000rpm within 5 seconds under default mode.

I am starting to think MSI designed the bios to gradually apply voltage no matter what.

On my asrock z690, I can use the software app and jack it to 100%, and the cpu fan will spin up to 100% instantly.
neither the bios nor MSI center is capable of doing this.
 

pman62

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Bump. Do any MSI officials work here? How do we get this fixed?

I think I found the cause of the z690 cpu fan speed delay.
The bios states that fan step up is 0.1s delay, but in actuality, there is a 1.0s delay....



Screenshot 2022-03-03 190819.jpg
 
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Mego

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I confirm the fans speed up and down perfectly fine with the Asus Apex mobo. Same everything else: cooler, fans, etc.

MSI needs to fix this
 

pman62

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i opened a ticket with tech support. let's see how they respond.

I thought this message board had msi officials who modified bios files
 

zerijelly

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Different vendor's BIOS setting for fan duty are different.
The CPU heat dissipation efficiency are different on different MBs, the CPU temperature ramp up speed are varied. These factors affect the speed of CPU fan to spin up.
It seems MSI MB's CPU temperature climbs slower when under CPU stress test thus CPU fan ramps up slower in my observation.
 

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Mego

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Different vendor's BIOS setting for fan duty are different.
The CPU heat dissipation efficiency are different on different MBs, the CPU temperature ramp up speed are varied. These factors affect the speed of CPU fan to spin up.
It seems MSI MB's CPU temperature climbs slower when under CPU stress test thus CPU fan ramps up slower in my observation.
My tests prove the opposite.

When you run a benchmark, the cpu would go from 23C to 80C within a few seconds. However, the fan never reach full speed during the entire Cinebench run.

The Asus apex spins the fans instantly. As a bonus, it ran many runs of Cinebench with the cpu temp at around 76C...stock bios! I was getting 86C with the stock msi bios with the same run. I will let you draw the conclusion, but it's partly better vrm, better voltage regulations, and better fan speed cooling as the fans ramp up right away to dissipate the heat.
 
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pman62

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Different vendor's BIOS setting for fan duty are different.
The CPU heat dissipation efficiency are different on different MBs, the CPU temperature ramp up speed are varied. These factors affect the speed of CPU fan to spin up.
It seems MSI MB's CPU temperature climbs slower when under CPU stress test thus CPU fan ramps up slower in my observation.

yes, MSI is slow

my other asrock z690 has the same cpu fan, and spins up faster.
if other motherboard brands can do it right, MSI can too.

Now it's just a matter of WHEN msi will fix this. CPU heat runs up too fast when I do video encoding, and the fan catches up later.

MSI needs faster response time.
 

Mego

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I returned the Unify-X. So far the Apex is far more advanced in terms of BIOS, options, OverClocking, and more. As a Bonus I found out that my CPU is rated SP90 :)
 

Mego

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i opened a ticket with tech support. let's see how they respond.

I thought this message board had msi officials who modified bios files
They asked me to return the board. So I did.
 

doug.hogart153b02d9

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I don't want to run MSI Center. In case this info helps, on my 12700K Pro Z690-A DDR4 with 1.2 BIOS and NH-U12S cooler with CPU fan defaults except .3s step-down, I try the following: I run HWINFO64 and see idle CPU temp around 35C and CPU fan around 350RPM. I start Prime95 Small FFT and notice that CPU gets up to around 72C and CPU fan around 1100RPM (not exact). I stop Prime95 and wait until cool/idle, then repeat while watching the CPU temp and fan (which update approximately every second). I notice that within around 5-6 seconds both the CPU temp and the CPU fan RPM are approaching those previously seen values (but not quite - perhaps around 69F and around 1000RPM). Similar results occur with Cinebench R23. I don't overclock other than XMP - in fact I look for settings like Turbo Ratio and CPU Lite Load (6) which I think make my CPU behave more like I prefer.
So I don't think I see results like yours where fan stepped up too slow compared to CPU temp.
 
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