Pump speed and fan issue

Legend · 22 Oct 2016 at 13:14

This is a bit strange, and I CAN fix it, but it means at the expense of running my fans at the speed I would like.

I have an MSI X99A Titanium motherboard, and bizarrely it seems they have only included 1 true PWM header, the CPUFAN1 header. Using any other header with the connector from my EK XRES Revo D5 has it running at max speed at 4800RPM. Nothing I do in the BIOS seems to alter this, I don't know why. The only way I can slow the pump down is by connecting it to the CPUFAN1 header.

However, this means I can't have my x3 ML120 bottom fans running off this header, and when I try running them off another header and adjusting the speed in the BIOS, which I can do (yet I can't do the same with the pump so what's that about?) but they won't go below 600RPM before shutting off entirely... whereas on the PWM header they were hovering just above 400RPM. No big deal perhaps, but this is really bugging me.

What's going on here, and is there anything I can do about it, or do I just have to make a choice?

pumpkinhead · 22 Oct 2016 at 17:37

How about using something like speedfan software?

Cerelia · 23 Oct 2016 at 17:52

In the BIOS, advanced settings, theres a setting called 'Advanced Fan Tuning', you have to run the fan tuning applications to use the PWM features. Until then the PWM function is turned off, even the CPU fan header is using pre-sets until you tune it.

I learned this when using asus x99 deluxe, MSI and Evga are the same requiring fan tuning

Legend · 23 Oct 2016 at 19:01

Cerelia said:
In the BIOS, advanced settings, theres a setting called 'Advanced Fan Tuning', you have to run the fan tuning applications to use the PWM features. Until then the PWM function is turned off, even the CPU fan header is using pre-sets until you tune it.

I learned this when using asus x99 deluxe, MSI and Evga are the same requiring fan tuning

I have rooted around the BIOS but cannot see anything that pertains to 'Advanced Fan Tuning'... MSI Command Centre (from Windows) seems to have something like that, but it won't let you take the fans below 50% which is a bit useless.