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Old June 30, 2009, 09:51 AM
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Default Push-Pull CPU HSF Config Question

Hi guys,

Heres my question. What if i plan to use a push-pull configuration setup on my cpu cooler but the two fans differ in speed(one is 1000rpm and one is 2000rpm), will the 2000rpm wear down my 1000rpm fan?
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Old June 30, 2009, 10:48 AM
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If you're going to do that then then I'd suggest using the Lower RPM fan as the "pull" fan and the higher one as the "push" fan. In this way, the higher rpm fan (presumably with higher static pressure as well) will have an easier time pushing air through the HSF than the low Rpm one would, and the low RPM can assist by pulling the hot air through the hsf as well. Just my $0.02.
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Old June 30, 2009, 06:40 PM
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Instead of push pull, simply use spacer on your back fan so it is closer to your heatsink. Given that your heatsink fan is pushing air to the back, you get the same result with one less fan (less noise pollution).
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Old July 2, 2009, 04:53 AM
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Quote:
Originally Posted by CORE View Post
Hi guys,

Heres my question. What if i plan to use a push-pull configuration setup on my cpu cooler but the two fans differ in speed(one is 1000rpm and one is 2000rpm), will the 2000rpm wear down my 1000rpm fan?
Yeah it will. Worst case scenario it'll negatively impact the performance, as the slower fan will act as a restriction, while spinning faster than supposed to.
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