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Radiator thickness performance?

post #1 of 5
Thread Starter 
Hey there,

I'm in the process of putting together a new build (first water cooled build) and I was wondering what kind of performance increase comes along with thicker radiators vs thinner ones. Obviously the thicker will perform better but I'm interested in by how much? Is the performance increase significant? I ask because I already have myself an EX420 as well as an EX240 but I was wanting to make the switch to 2 of Alphacool's Monsta radiators. I like the look of the thicker radiator a lot more than the thinner but if the performance increase isn't all that much I think I'd rather just stick with the thinner rads.

Any help would be greatly appreciated, thanks.
post #2 of 5
Quote:
Originally Posted by zerodesignskill View Post

Hey there,

I'm in the process of putting together a new build (first water cooled build) and I was wondering what kind of performance increase comes along with thicker radiators vs thinner ones. Obviously the thicker will perform better but I'm interested in by how much? Is the performance increase significant? I ask because I already have myself an EX420 as well as an EX240 but I was wanting to make the switch to 2 of Alphacool's Monsta radiators. I like the look of the thicker radiator a lot more than the thinner but if the performance increase isn't all that much I think I'd rather just stick with the thinner rads.

Any help would be greatly appreciated, thanks.

I would suggest that you read Martins report. http://martinsliquidlab.org/2012/04/14/360-radiator-shootout-summary/
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post #3 of 5
The thicker the radiator, the more air pressure is required to push air through at the same speed. If your fans are weak, you might actually get better performance from a 60mm or 45mm thick radiator than an 80mm.

The thicker the radiator, the more surface area is available to transfer heat.

The thicker the radiator, the more likely it is that you'll hit heat saturation levels with the air passing through it for a given air/water temp delta.

Two thinner radiators is better than one thicker radiator, but only if both have fresh air (no sandwiching).

The air flow rate through the radiator has a much more significant impact on the amount of heat transferred than the thickness of the radiator; that said, having a thicker radiator with the faster air flow will allow more heat to transfer as well.

Usually having a push/pull fan setup will gain more heat dissipation than adding an additional 20mm of radiator thickness to a push-only or pull-only setup.

----
I would recommend using the thickest possible radiator in a push/pull setup that does not interfere with the amount of radiators you can have.
Edited by Electrocutor - 8/6/13 at 9:03am
post #4 of 5
Thicker is better, only if you can supply sufficient cooling from the fans due to increased resistance. However, this can add noise as a cost, therefore fans at a lower RPM in push pull would be an optimal balance.
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post #5 of 5
Quote:
Originally Posted by Electrocutor View Post

I would recommend using the thickest possible radiator in a push/pull setup that does not interfere with the amount of radiators you can have.

I was going to say "A simple rule to go by when choosing radiator thickness is, use the thickest radiator possible that you can fit push/pull fans on." but Electrocutor not only beat me to it, but he beat me to it with a much more detailed reasoning. XD
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