Sign in with
Sign up | Sign in
Your question

Cpu fan airflow direction

Last response: in Motherboards
January 26, 2012 9:38:51 AM


I work on instruments that have a Rapture motherboard with a Pentium III CPU. The heatsink and fan are always pre mounted. I had to replace the CPU fan mounted on the heat sink. When I removed it the air direction was blowing air on the heat sink not pulling heat away.

What is the correct air direction for the fan mounted on the heat sink?

a b V Motherboard
January 26, 2012 10:22:46 AM

Most of them blow downward on the heatsink fins. Never understood this, but that is what they do. Aftermarket styles have various configurations, usually some form of sideways.