PA120.3 Push or Pull?

The Asgard said:
Depends on your case air flow and what you want to do with the air?
Click to expand...

Its basically getting fitted to the inside top of a Lian Li PC70

I'm thinking of having the 120mm fans at the bottom of the rad pushing air up and through the rad and out of the case through holes cut in the top of the case.

Was thinking of plugging in the 6 remaining 80mm holes with 7v 80mm fans all set to pull air into the case to aid the flow of air up and out of the top through the rad.

Thoughts?
 
From thermochill FAQ:

"For best temps on the PA series, testing currently shows PUSH to be the best solution... shrouded vs unshrouded exhibits minimal benefits, in the region of upto 2%. Fans pushing as opposed to fans pulling exhibits increases of upto 4%, and is roughly equivalent to running a shroud with fans in a pull configuration."
 
thanks for all your replies!

Well it sounds like my best bet would be to have the fans on top of the rad pushing cool air fed from holes on the top of the case over the rad and down through the case, then using the remainder of the fans in the case 6 x80mm (LianLi PC-70) to pull air out of the case at the bottom.

Thoughts?

DeadMan

p.s bit arrived today so its dremel time tonight :D
 
Marci said:
Sorry folks... initially push was better, but there's been recent testing showing otherwise and the FAQ still needs updating...

"Minimal difference" is a term used a lot for push vs pull... but realistically, in radiator performance terms that 1 degree is a HUGE amount of difference when you're talking temp changes in the regions of hundredths of a degree per watt of heat, which means that a setup with 1 degree colder temps could be able to remove up to an extra 50watts of heatload (if asked to) over the warmer setup.

Pull (suck) provides more even airflow which generally results in better performance over the same fan on the same radiator in push...

Source: http://www.xtremesystems.org/forums/showthread.php?t=150261&highlight=fan-pull
Click to expand...

Thanks Marci, perhaps it does not make that much difference after all..

:confused:

Could you recommend an ideal setup in my case without using a Performance Shroud?

Cheers

DeadMan
 
Well I have it setup pulling air through the rad and out of the top of the case with 4x 80mm fans as cool air intakes at the bottom.

It works quite well apart from my 8800GTX causing a heat build up in the case.

I have ordered the EK 8800GTX (acetal top version) to hopefully sort this out.

I have gone from about 25 - 30db to around 15 - 20db.. and its amazing.

The hard drive clicks are starting to drive me nuts now though.

DeadMan
 
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