Questions about optimum Push/Pull Corsair H60 config using two different fans

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bk159395901

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Jan 23, 2015
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Hello. I am planning to overclock an i7-4790k, and would like to add an extra fan to the Corsair H60 all-in-one cooler I have. The push fan is the fan that came with the cooler (1700 RPM, 74.4 CFM) and the fan I want to install for pull is a Raidmax case fan, 1100 RPM , 47.1CFM. I'm not opposed to changing the Raidmax fan later, I just happen to have it on hand now. Is this the ideal configuration, given what I have on hand? Thank you very much for your time and your help.
 
Solution
bgunner
That is not a good idea to do. The reason is because the weaker fan ( pull ) will actually decrease the cooling effectiveness of the first fan causing higher temps in the end. Because the Raidmax fan does not move as much air, the air coming out of the radiator will be slowed down reducing the cooling effectiveness.

IF you are really insistent on using that fan, Cut the center out, ( the fan blades and supports ) and make it into a spacer for between the push fan and the radiator. This will stop the dead spot that occurs right behind the fan blade hub allowing for the center of the radiator to get more air and cooling better. { this is best done with a dead fan though }
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bgunner

bgunner

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Feb 13, 2009
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That is not a good idea to do. The reason is because the weaker fan ( pull ) will actually decrease the cooling effectiveness of the first fan causing higher temps in the end. Because the Raidmax fan does not move as much air, the air coming out of the radiator will be slowed down reducing the cooling effectiveness.

IF you are really insistent on using that fan, Cut the center out, ( the fan blades and supports ) and make it into a spacer for between the push fan and the radiator. This will stop the dead spot that occurs right behind the fan blade hub allowing for the center of the radiator to get more air and cooling better. { this is best done with a dead fan though }
 
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Solution
bgunner

bgunner

Judicious
Feb 13, 2009
5,144
14
32,515
The RPM does not matter as much as the CFM and static pressure. The best option is to try to get the same exact fan that you have now attached to the radiator. Getting the same fan assures you that the CFM and Static pressure is the same.

CFM: Cubic Feet per Minute. A measure of air volume the fan can move at it's maximum / optimum performance.
RPM: Revolutions Per Minute. Is a count of how many time the item spins in a complete circle per minute.
Static Pressure: a measure of how much force the fan can push the air with. The higher the value the more force the fan create to push/pull air through cooler and radiators.
 
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