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front fan too slow

post #1 of 9
Thread Starter 
I am trying to increase the speed of the fan in the front of my case. My fan is attached to my mobo and right now the speeds are around 600rpm with prime96 running, smartfan is turned off and my cpu fans are running at 1360 rpms and my back case fan is running at 1220~ rpms. The fan in the front of my case I know is capable of running at higher rpms because it was the blademaster I took off of my hyper 212+. How can I get my fan to spin faster?
   
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post #2 of 9
What fan header is the fan plugged into, sys_fan1, sys_fan2, pwr_fan?
post #3 of 9
You could just plug it into a molex, then it will run at full speed.

3-pin to 4-pin Molex adapter:
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post #4 of 9
Thread Starter 
its in sys_fan 2, how can i change the speed?
   
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post #5 of 9
im pretty sure you can change it in the BIOS. the blademaster can get up to like 2k rpm.
    
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post #6 of 9
Quote:
Originally Posted by chinesethunda View Post
its in sys_fan 2, how can i change the speed?
Apparently you can't. By default Sys_Fan2 is half power (~6V) and even though its labeled as 4 pins, the PWM control pin is actually a dummy, marked as "reserved" (see P24 in the GA-P55a-UD3 manual). So the fan control is sort of psuedo PWM and ramps based on the Northbridge temps. Smartfan provides no control for this either, only for CPU_Fan.

I've read that speedfan does control sys_fan2 through advanced settings, so you might try that or connect the fan directly to your PSU .

One other possible option... get a 4-pin PWM splitter cable, and connect the PWM fans to CPU_Fan header
Edited by gymenii - 5/26/11 at 3:40pm
post #7 of 9
Get a fan controller? I installed this today Link Jury's still out but so far so good.
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post #8 of 9
Thread Starter 
i already have a splitter to the cpu fan already for my 2 heat sink fans, I might try to plug it straight into the psu if speedfan advanced controls dont work. any idea what option in the advanced options?
   
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post #9 of 9
Quote:
Originally Posted by chinesethunda View Post
i already have a splitter to the cpu fan already for my 2 heat sink fans, I might try to plug it straight into the psu if speedfan advanced controls dont work. any idea what option in the advanced options?
Sorry I don't, but a lot of people use speedfan so search around, I'm sure it's just a few clicks away.
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