TweakTown uses a different method for testing CPU heatsinks which allows for an even playing field across all product tests. We feel that by using the same ambient temperature and strict lab-like testing procedures we are able to accurately compare one product to another. More information on our testing procedure can be found in the T.E.C.C. article here.
I was honestly expecting the Nirvana NV120 to perform a little better in this test. Don't get me wrong, the cooler is a beast when it comes to cooling but the newer ZEN gave us a little better performance.
At idle the Nirvana is quiet, but not silent. Once you start getting into load voltages the fan comes alive and it only gets louder from there. The noise isn't a high pitched whine, but more of a lower mid-range roll; just a little higher pitched than a rumble. The sound isn't that annoying, but you will definitely know it is there.
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