I am getting ready to install a Cooler Master Hyper 212 EVO cooler on the PC I'm building. The cooler comes with one fan but gives you the option of installing a 2nd fan. It appears that the first fan blows air into the cooler. If I install a 2nd fan, is it better to set it up to also blow air into the cooler or is it better to have it blow air away from the cooler?
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Blow air away from the cooler, so you get one stream of air moving through the heatsink.
I also strongly recommend buying a matching fan for optimal performance. If you are still using the stock fan i believe it is the blademaster 120mm fan