CPU Cooling Idea

[Maxil223]

Ive heard on many computer thats people have the fan on their heatsink, blowing down, and on others, blowing up. So lets say my fan was blowing up, could i just run PVC from the tip of the fan, straight to case fan blowing out of the case??

 

[BW86]

yes you can do that. The hsf on my old dell 866mhz had that. They didnt use pvc though 😛

 

[stevennoland]

Why stop at the case? Get a twenty foot flexible hose (80mm in diameter) and run it outside of the room (house).

 

[Nyati13]

Originally posted by: stevennoland
Why stop at the case? Get a twenty foot flexible hose (80mm in diameter) and run it outside of the room (house).

It would take a pretty powerful fan to push air through a hose that long, unless a much larger(and louder) fan was attached at the outside end to pull air mass out.

 

[Cerb]

Yes, although PVC would be heavy. You could fold & staple a duct together from plastic folders pretty easily.

 

[Blain]

Originally posted by: Maxil223
Ive heard on many computer thats people have the fan on their heatsink, blowing down, and on others, blowing up. So lets say my fan was blowing up, could i just run PVC from the tip of the fan, straight to case fan blowing out of the case??

True, you are not the first... It's called a "duct" 😛
Most heatsinks are designed for air to be blowing down on them. The Alpha's are about the only HS that I know of that are designed for air to be sucked up off them.
And if you've got extra holes, it works even better :laugh:

 

[Icepick]

My old Gateway2000 Pentium II was cooled with a duct going from the heatsink directly to the lower fan in the power supply. No other case fans were included. That was their stock cooling method.

 

[BonzaiDuck]

I think the slight difference in cooling performance with "sucking off" the heatsink versus "blowing onto" it has to do with air-pressure. exhausting air off the sink decreases pressure slightly where it is needed; blowing it onto the sink increases pressure slightly. Denser air -- more heat capacity-- better cooling.

Some of the benchmarks done on my CPU heat-sink show differences of 1 or 2 degrees C between one approach and the other. . .