Question Help with Optimal Fan-Speed Curve for a Ryzen 9800X3D ?

[az0t]

Hi everyone
I've recently built this new build and I think my 4 CASE fans are way to loud right now. AIO (Liquid Freezer 360 iii) Fans seem to be alright. Maybe someone can help me out.

For my current setting, I have the AIO "pump+fans" attached with one single cable to the "CPU_Fan1" on the motherboard. The four case fans i've attached to "SYS_Fan1" header.
I have the following curves in my MSI center:

https://imgur.com/a/SWjB6ww

View: https://imgur.com/a/SWjB6ww


My guess is that I can leave the CPU Fan like it is and just fiddle with the SYS Fan, since those seem to be so loud? Any suggestions to get a safe and quiet setting?
Thank you for helping me out

 

[bill001g]

What do you mean "safe". Modern cpu all start to reduce their clock speeds to reduce the heat. As long as you stay under that limit it really doesn't make any difference if the cpu is at 50 or is at 60 it will run exactly the same.

Run a temp monitor and watch the temps. Set the curve to flat so you can control it. Set them as low as possible and then run benchmarking software like cinebench to max out the cpu. Keep reducing the fan speed until the cpu actually hits thermal throttle limits. This is your maximum fan speed for any curve. Maybe add a bit more so on a hot day in your house you do not actually hit the limit.

Since you are using a massive cooling solution on a cpu that does not really put out a lot of heat I suspect you can run your fans constantly at the speed you find in your testing. With this much cooling you really do not need a curve it is likely the noise is very low even at this rate.

What you will quickly find when you do this is it is not the case and cpu fans that cause the problem. They are all fairly large fans it is the ones on your video card. These are small fans and they are very loud when running at high speeds. You can do almost nothing about this since video cards will run very fast when they are under high load even with lots of cool air around them.

 

[CountMike]

Hi everyone
I've recently built this new build and I think my 4 CASE fans are way to loud right now. AIO (Liquid Freezer 360 iii) Fans seem to be alright. Maybe someone can help me out.

For my current setting, I have the AIO "pump+fans" attached with one single cable to the "CPU_Fan1" on the motherboard. The four case fans i've attached to "SYS_Fan1" header.
I have the following curves in my MSI center:

https://imgur.com/a/SWjB6ww

View: https://imgur.com/a/SWjB6ww


My guess is that I can leave the CPU Fan like it is and just fiddle with the SYS Fan, since those seem to be so loud? Any suggestions to get a safe and quiet setting?
Thank you for helping me out

Pump and it's fan's peed are not adjustable, you CPU_FAN1 header adjusts only radiator fans. For those use just simple curve that starts at about 40c and max revs at 90c which is Tjmax 95c (it doesn't throttle until 95c), any finer curve settings do practically nothing, not even PWM fans are so accurate or sensitive.
While CPU_FAN adjusts according to CPU temperatures, SYS_FAN adjusts fan speed according to MB temperatures, mostly chipset and/or VRM so those are ones to monitor for case fan speeds. Modern MBs let you choose which temps to monitor and adjust but also to chose which mode that should match fan's mode. PWM (4pin) or Voltage adjustment (3pins). Speed curve, same as for CPU. Find minimum and maximum temps and make straight line between them.