Round 4

APC Australia - - Technotes -

NOISE

De­spite what many think, more fans doesn’t nec­es­sar­ily mean more noise. The the­ory here is sim­ple: As you in­evitably al­ways have the same max­i­mum tem­per­a­ture to al­le­vi­ate, you al­ways need to hit that as a bare min­i­mum. One fan cool­ing a pro­ces­sor, for ex­am­ple, would need to be spun at a far higher RPM (gen­er­at­ing much more noise) to pro­vide sim­i­larly ef­fi­cient cool­ing as two fans of the same size over the same sur­face area. Be­cause of this, and due to the way that deci­bels scale log­a­rith­mi­cally, two 24dB fans (where 25dB is a dou­bling in noise), op­er­at­ing in tan­dem, are far qui­eter than a sin­gle 32dB fan. In a sim­i­lar fash­ion as cool­ing ef­fi­ciency, stock cool­ers are gen­er­ally not the best fit for this. Al­though they can be quiet, due to the type of chip they’re likely cool­ing, the smaller sized fan and lack of sur­face area mean higher RPMs. We could hand this to AIOs, due to their in­creased sur­face area over air tow­ers, but there’s one hic­cough: the poor quality of the stock fans in­cluded. Most air tow­ers are designed with lower RPM, qui­eter fans in mind, be­cause the cost comes from those rather than the pump and ra­di­a­tor.

WIN­NER Air tower

“Al­though liq­uid cool­ers are by far the most ef­fi­cient at trans­fer­ring heat quickly, and a fan­tas­tic op­tion for those look­ing for a stylish and com­pat­i­ble cool­ing so­lu­tion for the hearts of their ma­chines, there is some in­her­ent risk.”

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