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.
The Arctic Cooling Freezer XTREME ran parallel with the most recent coolers to pass through the lab. The cooler is able to dissipate up to 160 watts of CPU cooling power, a number I saw a lot of this past week. I think a company is getting ready to launch a new flagship processor and this number will come up quite a bit over the next month. The AC Freezer XTREME is a large cooler that is able to keep the processor right at 15 degrees above ambient.
As you can see, the Arctic Cooling Freezer XTREME is a quiet cooler. Since it pushes and pulls air through the fins, the fan does not have to run at high RPMs to do the job. Some of the other coolers that perform at the same level give off a higher SPL reading at full load. The idle speed of the fan is completely silent, more than a few people will be taking a look inside their case just to be sure the fan is even running, that is how quiet it is.