Push V Pull

[kitkat9933]

Got my W/C setup with Radiator on top of case for CPU.

When I have my fans on the Rad in PULL rather than PUSH i get about 10 degrees lower temps.

Now I am no Physicist, but surely pulling cold air over the radiator and then pushing this warmed up air over the CPU should be worse than pushing all the hot air out of the system.


Does anyone know why PULL is better?

 

[kitkat9933]

It's possible that it stops any air circulating at the top above the rad. Having said that, I wish I saw this before I finished my watercooling setup, both rads are set to push air though.

Yeh that makes sense, I guess cutting of air circulation.

I had a play with push and pull, pull was about 20% cooler. However, I just had to make sure for pull that I put another fan to push air out at the back of the case.

 

[kitkat9933]

I did the tests about 3 times in each setup, for about 20 minutes while running Prime 95.

Max temps in Pull 55 degrees C. Max temps in push were 67.