Optimal airflow?

Merlin5

Merlin5

Merlin5

Soldato
Joined
17 Aug 2009
Posts
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Location
Finchley, London
Just bought these four 120mm fans, haven't got them yet. What's the best way to arrange them in a coolermaster CM690? The ac ryans have highest airflow at nearly 80 cfm, the xigmatek is 61 cfm, the enermax is 46 cfm. One of them will go on an HR-03 GT vga cooler, one to replace rear exhaust fan, one to sit in the space on floor of case next to psu, and one to go directly above it in roof of case. Wondering which you would put where and would you have either or both of roof and bottom fans as exhaust or incoming?



 
niko said:
heat rises ,so id put the higher cfm @ the top
Click to expand...

As an exhaust then? Then again, would it be better to have higher cfm extracting air from the top, or from the rear exhaust fan which is directly in line with the cpu cooler pushing air in it's direction? Or if I had both highest cfm fans on rear exhaust and top of case, would I be missing out on the best cooling for the vga cooler by having a slightly lower cfm on that?

How would this work, think it would be good? :

77.70cfm rear exhaust
77.70cfm vga cooler
61cfm top of case as exhaust
46cfm bottom of case, as inlet or exhaust?
 
Last edited:
Merlin5 said:
As an exhaust then? Then again, would it be better to have higher cfm extracting air from the top, or from the rear exhaust fan which is directly in line with the cpu cooler pushing air in it's direction? Or if I had both highest cfm fans on rear exhaust and top of case, would I be missing out on the best cooling for the vga cooler by having a slightly lower cfm on that?

How would this work, think it would be good? :

77.70cfm rear exhaust
77.70cfm vga cooler
61cfm top of case as exhaust
46cfm bottom of case, as inlet or exhaust?
Click to expand...

try both combos and stress test ,as airflow is so case/system dependant
 
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