Originally Posted by 8564dan
I have built the new system with the 3950X and MSI Unify.
Got Windows installed etc...
I went into BIOS and enabled PWM mode and Smart Fan Mode.
The thing is, it is quiet but at idle, the temperature fluctuates so much that the fans are always ramping up and down with it.
Is there recommended curve?
At idle, just on Chrome, it's literally min 36 and max 63 degreesC.
Is it ok to set a custom curve to literally be on a extremely low RPM and then ramp up after 70?
Maybe I have them all set to go with the CPU temp atm and should change that to.
Any suggestions would be great.
In the BIOS, I’ve fiddled with the curves and it’s dead quiet. I can actually hear a slight electrical sound coming from the motherboard now. Put my ear up to the IO of the motherboard and it’s coming from there. Is this generally normal?
There's no predefined curve that will fit your build perfectly. The fan curve it's dependent on the case, fans, cooler and their configuration, aswell as the hardware, CPU and GPU.
Just make a curve and test. There's no good or bad, it all depends on your builds, the temps and noise level you are comfortable with.
That being said, on ryzen because of the thermal density and the consequential temp. spikes, it's recommended to use a custom curve with with a very mild RPM change between 30 and 60°C.
Try to use set something like this and check temps 0-40°C 500rpm, 60°C 800rpm, 65°C 1000rpm, 70°C 1200rpm and 75°C max RPM (or 1500).
If your CPU consistently spike with cooler and case fans above 70°C with the curve i gave you, you either endure the noise, or improve cooling.