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.
As you can plainly see, temperatures in either test are nothing to write home about. In defence of Thermaltake with my take on this is, for the average user this cooler is going to perform well in comfortable temperature ranges; it just isn't something I would recommend taking your processor to extremes on. Considering this is accomplished with a very quiet 58 CFM fan, I realize that quiet doesn't always equal cool. By no means is 62.9° Celsius hot, just a bit on the warm side. Today's 45nm processors can take that sort of temp all day long; it's more about personal comfort with each buyer.
Here is where I was really surprised! The single fan testing was very impressive, to, well, dead silent. With the Pure Silence ISGC fan 12 accompanying the ISGC-300, it was even quieter than the Noctuas I had previously tested. Granted, this cooler doesn't perform as well as the same Notctua cooler, but this is Thermaltake's first leap into the silent market and they have definitely got a full grasp on this half of the equation.
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