- Joined
- Nov 23, 2003
- Location
- Toronto, Ontario, Canada
Does anyone know if the HSF is sucking air towards it or pushing it away? I also wanted to know if it makes a difference as to if its pushing or pulling.
Thanks
Thanks
-
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CPU Fan pushing or Pulling???
- Thread starter dorimon81
- Start date
- Joined
- Dec 13, 2001
- Location
- Tulsa, OK
not many heatsinks are designed to have the air "sucked" across them. the alpha pal 8045 is supposed to suck, but i seem to get better results with the fan pointing towards the cpu. also, i like the secondary cooling effect of the air blowing across the mobo. my brother has an slk800 with a tornado, and he has a ton of air the blows right across the north bridge heatsink, so that helps alot with high fsb setups as well.
your best bet is probably to have the fan blowing down, but test it if you want to. maybe it will work better.
your best bet is probably to have the fan blowing down, but test it if you want to. maybe it will work better.
In theory should pushing the air work better than sucking the air. Cuz when the fan sucks it sucks the air close to the mobo and the "hot" components. That would draw warm air over the fins of the hsf. 1 degr increase???
However when the fan sucks, the deadspot problem would be smaller... Hmmm. Not sure what I think anymore. Try it! If it works you will be happy. If it not you have at least learnt something new...
However when the fan sucks, the deadspot problem would be smaller... Hmmm. Not sure what I think anymore. Try it! If it works you will be happy. If it not you have at least learnt something new...
- Joined
- Dec 28, 2001
- Location
- Corner of No and Where
Blowing air into the heatsink is usually (but NOT always!) best.
Almost all heatsinks are designed for air to flow in this pattern although there have been exceptions in the past, and may be a few available now (I am out of touch with the newest aircooling stuff.)
Experimentation is good though- occasionally you may find a system where pulling air out of the sink will work better, regardless of what the manufacturer intended! Air flow is weird and can cause some strange things to happen- try it and see.
Almost all heatsinks are designed for air to flow in this pattern although there have been exceptions in the past, and may be a few available now (I am out of touch with the newest aircooling stuff.)
Experimentation is good though- occasionally you may find a system where pulling air out of the sink will work better, regardless of what the manufacturer intended! Air flow is weird and can cause some strange things to happen- try it and see.
- Joined
- Jul 25, 2003
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- Rio de Janeiro
rogerdugans said:
Exactly
OP
- Joined
- Nov 23, 2003
- Location
- Toronto, Ontario, Canada
- Thread Starter
- #9
I think mine does pull air away from the sink. I got one of those crappo heatsinks though. I think I'll try changing the flow around.
- Joined
- Dec 28, 2001
- Location
- Corner of No and Where
Reading this again I though of another point to add:
Checking temps at full cpu load is the best way to be sure which way works best.
Getting a better temp when the cpu is idle is not very relevant; getting 1 or 2 c lower at full load is (at least when overclocking to the extreme end!)
Checking temps at full cpu load is the best way to be sure which way works best.
Getting a better temp when the cpu is idle is not very relevant; getting 1 or 2 c lower at full load is (at least when overclocking to the extreme end!)
