Apart from the idle mode, majority of the of PC systems work in full load. The Intel stock cpu cooler reaches 71 Celsius when paired with an Intel E6750 @ 2.66GHz. Lets see how the coolers performed in this test.

The cpu coolers with two fans seem to behave more or less the same with 54 Celsius overall heat load. The ThermalRight SI-128SE has very good performance, even when a single fan is installed.

Overclocking our system to 3.60GHz will unveil more interesting details about the behavior of each cooler. The performance differences are very small, and the CoolerMaster Hyper 212 with two fans seem to get the second place, following two similar fans (CooLink Silentator & Noctua NH-U12F). After removing one fan, the majority of the high-end coolers seem to behave very closely to each other with 71 Celsius. What didn't impressed us was the fact that Spire Starflow cpu cooler performed worse than Intel's stock cooler in this test.

Last, by lowering the cooler's rotation speed, we can see which cooler performed better under low noise conditions.What affects the performance of each cooler in this test is the efficiency of the design and fan of each cooler. The best performance comes from CooLink Silentator, which comes with two fans installed. CoolerMaster Hyper 212 and ThermalRight SI-128SE follow very closely.