HSF - WHich Direction should air blow?

[lloe]

SHould my hsf blow air onto the cpu, or draw air from the cpu?

Right now, mine is blowing onto the cpu.

Is there a difference?

 

[Mikewarrior2]

Most heatsinks blow air onto the heatsink... Alpha's, on the other hand, are designed to pull air "away" from the heatsink.



Mike

 

[ride525]

Some folks say it depends on which HSF you are talking about. The Taisol 733092 HSF for my Duron 600 came with the fan blowing onto the CPU. I tried reversing it so it was blowing out, but the CPU temps went up a bit....and it made a terrible whine. I tried a second time, still the higher temps and whine.

So I reversed the fan back to blow onto the CPU, the temps went back down, and the whining noise went away.

So, for this Taisol, blowing onto the CPU seemed to work the best.

 

[bryan2010]

I noticed no temp difference when I switched the fan around on my Alpha heatsink. The diff is probably going to be minimal weither you have the fan blow or suck
Bryan