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Heatsink fan- 3pin vs 4pin problem

Last response: in Motherboards
July 10, 2011 12:44:22 AM

I Bought an mobo and it is not working with my new CPU my CPU acts as if it is not getting any does not get warm...I checked the voltage with a multimeter coming out of the PSU to the CPU connector and it measured a CORRECT I ordered a replacement CPU to see if it was the CPU...plugged in the new CPU same my last thought is this..

The Heatsink fan is a 3 pin for an old AMD athlon fita like a glove but the mobo has a 4 pin connector for the CPU can...if my board has a safety feature that will not give the CPU power if all 4 pins are not connected...because the board otherwise thinks there is not a HSF on it...anyone know if this is true with my MOBO...ASUS is not currently open so here i am going to the always helpful tomshardware forums :) 

any answers are appreciated :)  thank you! - David

More about : heatsink fan 3pin 4pin problem

a b V Motherboard
a b à CPUs
July 10, 2011 4:57:26 AM

Can't comment on AMD, but on Intel you can definitely use a 3 wire fan on a 4 wire header and it will work fine - I'm doing that right now because I'm running a Noctua cooler with a three wire fan instead of the 4 wire Intel stock cooler.

I don't think that's your problem - I think you have a motherboard problem.