2 radiators(3 fans EA) vs 1 radiator(6 fans)

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iphyre

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Jan 13, 2014
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I'm going to OC a 9350, 2x R9 290(maybe splurging for the X's).

The radiator(s) will be 60mm thick 360 rads or a 80mm thick 360 rad, depending on the answer to the question(s) below.

the question is would I have better temps with 2 radiators with 3 pull fans each or if 1 radiator with 6 fans in a push/pull would have the best results for lowering temperatures?

I read in two different locations that adding in too many radiators tends to build up water at the end which moves slower, but that more radiator space equates to more head dissipation.

Thanks in advance for helping a newbie.
 
Solution
Bonecrushrr


For the system you want to run you need approximately 4x 12cm fans worth of radiator space as has been explained earlier as a minimum. More...
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faalin

faalin

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Feb 22, 2012
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the bare minimum for radiator space is going to be 480, the cpu will need 240 and add 120 for every extra part. since you are adding 2 gpus you will need a 480 rad. you could squeeze by with a 360 80mm thick but your OC will suffer from not being able to get rid of the heat. The best thing is to run a push pull on whatever you get.
 
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iphyre

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Jan 13, 2014
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So my best bet would to be run dual 60mm 360 rads as push/pull(12 fans)? But would 2 60mm 360 rads in pull be fine as well. like no REAL suffering on major heat dissipation? would the difference in degrees be marginal or would we be talking the difference of 10+ degrees C?

FYI the case is a corsair 800D
 
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Fox1408

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Nov 6, 2013
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In my opinion, 2 radiators would be better because it has more surface area. Also do you have enough fan connectors if you were to go the push/pull way?
 
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Bonecrushrr

Bonecrushrr

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Jan 5, 2014
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For the system you want to run you need approximately 4x 12cm fans worth of radiator space as has been explained earlier as a minimum. More radiator area is always better.

2 360 radiators with 3 pull fans will give you far more cooling than a single 360 with push/pull.

More radiators does slow down the coolant flowing in your loop however if you have a good pump it should be minimal and keep in mind that in a typical water cooling loop the water runs so fast that the temperature delta between the entry into your radiators and the exit is usually in the rang of 0.1 or 0.2 degrees C so even if your loop is a bit slower yet that may come up to 0.3 degrees... not enough to worry about. If your that worried add in a second pump... 2 pumps must be better than 1.

Push pull gains a bit of air flow and slightly lower temperatures at the cost of noise however with 864 square cm of fan surface area simple pull fans will be more than enough.

I think myself in that case I would run a thick 80mm rad with high static pressure fans in the top and a 120 mm on the back fan slot...
 
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