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Low CFM Rad + high CFM fans= poor cooling?

post #1 of 11
Thread Starter 
Am I to understand that my fans CFM may be too high for my Rad and could be giving me poor temps?
    
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post #2 of 11
huh? I'm not sure if I follow you there.

if I understand you right though you have fans that blow like crazy and wonder if that would cause your temps to be high. if that is the case then no it won't.
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post #3 of 11
Thread Starter 
so it's just a noise thing then
    
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post #4 of 11
Yup I would imagine so.
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post #5 of 11
well what rad do you have?
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post #6 of 11
The only way increased air flow could lead to increased temps is if you happen to have a fan than can get air to around Mach 2, where the heating from friction would become a real factor.

Otherwise, temps will always drop with more air flow, though there is certainly a point of deminishing returns.
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post #7 of 11
Actually it's not...
It's best to use the same fans on your rad.
Otherwise certain parts get more cooling than others due to the CFM difference, which would be bad... I think.

I don't really understand these things to be honest, but thats my one cent.
    
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post #8 of 11
Thread Starter 
Quote:
Originally Posted by whe3ls View Post
well what rad do you have?
an old black ice pro 2, I didn't know till now that it used low CFM and I got high CFM fans.
    
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post #9 of 11
As already stated, more CFM through fins can never (under normal circumstances )be detrimental... heat dissipation increases as more moving air is available to transfer heat off the metal... Densely spaced fins (on heatsinks and radiators) have a higher cooling capacity due to more surface area for dissipation, but will require more pressure and CFM to expel the heat properly (as made famous by the TRUE).... More sparsely spaced fins give less surface area, but require much less pressure and CFM to expel the heat

I believe you misheard whatever it was that you were told... Your radiator, which you describe to be "low CFM," probably has less densely spaced fins to allow for lower CFM fans to be used effectively.... However, using high CFM fans doesn't decrease performance on a radiator with a sparser fin layout - it just means that you've surpassed your radiator's capability to move heat to where it can be expelled by the fans.... the only negative there is unneeded dBA
Edited by killa_concept - 5/22/08 at 6:06pm
post #10 of 11
The BIP scales pretty well with higher cfm fans, the temp curve on them starts to flatten out at around a 110-120cfm...It will flatten out some but your temp's will still go down a little more...
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