Fan at max speed (ga-ep43-ud3l)

[erv]

Hi, I recently bought a pc desktop. it's case has a "silent cool system" (2 fans 120mm and a 3rd 80mm). BUUUT Both 120mm fans run at max speed (even if CPU fan is not working)...

How can I reduce their speed? My pc has a GA-EP43-UD3L.. I've read BIOS SETUP manual, and I think I need to verify the "CPU EIST FUNCTION", "CPU SMART FAN CONTROL" and "CPU SMART FAN MODE"..

But anyway, I still have doubts.. Is it possible to manipulate their speed via software?

[profJim]

Re: Fan at max speed (ga-ep43-ud3l)

Speedfan software allows you to set fan speeds and also monitors your temps and voltages. If your bios settings are properly set it should lower some fan speeds.

[NimrodAUS]

Re: Fan at max speed (ga-ep43-ud3l)

Are the case fans connected directly to your MB? If so As above will apply

[Psycho101]

Re: Fan at max speed (ga-ep43-ud3l)

I believe the only fan that CPU smart fan control slows down is, as per the name, the CPU fan.

There may be other headers on your board that you can use a software fan control program on to reduce their speed. There also may be fan headers on your board that supply less than the standard 12V. Check your manual to see which headers supply a lower voltage, and you could connect them there.

5V isn't alot for a fan though, and they will always be spinning slowly.

You can buy in-line resistors that plug into your fan and a 12V supply to reduce voltage to 9V, 7V and 5V if you wish. There are also fan controlers available both with digital displays and analog dials. Fan controlers give better flexability, as you can dial fans up and down depending in what you're doing.

Another option is to get some fans that can maintain a good air flow at low noise levels. Ones I have used and rate as quiet but with good flow are Enermax Batwing, Akasa Amber (not as good airflow but quiet) and Noctua NF-S12B 1200RPM. The noctua fans produce about 17dB and shift an impressive 50CF/M of air.

**EDIT** The only headers that I can control on my board with speed fan are the CPU and I believe the only other 4 pin header (I think SYS_FAN_2), and I don't use the second four pin headder as it only supplies a max of 5V, which is pretty useless.