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Can you force fan speed?

BlueAcolyte

BlueAcolyte

Platinum Member
I was wondering if I can use speedfan or something to push my fan to go faster then 700RPM. It's connected into the 4-pin motherboard header labeled Sys_Fan2.
 
Usually you can speed up your fan either through bios or through the software that came with your motherboard. I used to do that on my ASUS motherboard with Asus Probe for example.
 
Originally posted by: BlueAcolyte
I was wondering if I can use speedfan or something to push my fan to go faster then 700RPM. It's connected into the 4-pin motherboard header labeled Sys_Fan2.
Click to expand...

You may have answered it before, though not in this thread but, what motherboard are you using?
 
GA-P35-DS3L. I think there's something wrong with that SYS_FAN2 header because it reduced my other 120mm fan to 30% of normal speed when I plugged it in. I plugged the old 700RPM fan into the PWR_FAN and now it spins at about 2000RPM.

Temps have gone down about 6C on my graphics card (which this is cooling)
 
Originally posted by: BlueAcolyte
GA-P35-DS3L. I think there's something wrong with that SYS_FAN2 header because it reduced my other 120mm fan to 30% of normal speed when I plugged it in. I plugged the old 700RPM fan into the PWR_FAN and now it spins at about 2000RPM.

Temps have gone down about 6C on my graphics card (which this is cooling)
Click to expand...

Depending on where's they're each located and if theyre is a dedicated chipset header the sys_2 could be thermally controlled by any number of temp probes built into the motherboard. Where's the header at and is there a dedicated chipset header?
 
Originally posted by: BlueAcolyte
It's... right below the RAM slots. It's the only 4-pin header besides the CPU_FAN (might explain something)
Click to expand...

Thats the header designed for the chipset fan and that is exactly why it rolled the speed back. I say slice and solder the fan plug onto your new fan or, send me $5 and your old fan and I'll make you an adapter.
 
Sorry, I have some molex adapters around, I can use those. (I managed to bend the pins in one... wow.)

Unrelated question: My PSU has something like a fan connector... Is it a fan connector to control the speed?
 
Originally posted by: BlueAcolyte
Sorry, I have some molex adapters around, I can use those. (I managed to bend the pins in one... wow.)

Unrelated question: My PSU has something like a fan connector... Is it a fan connector to control the speed?
Click to expand...

It's more than likely just to monitor RPM.

It's possible that it's power supply temperature controlled fan port but, only it's the male side of the connection, not the female, if it's the female it's just for rpm monitoring.
 
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