Since the Custom setting can vary from user to user I will stick to the two presets, Silent and Extreme.
With the system running at stock settings the Kuhler H2O 920 in silent comes in at the back of the pack at 63.25*C, 16.25 degrees cooler than the stock Intel HSF. It is also 9.25 degrees warmer than the Prolimatech Super Mega. When I cranked up the Kuhler H20 920 to the extreme stetting the performance jumped was alot to say the least. Running in the Extreme setting the 920 came in at 54* C, better than any self contained kit tested so far. The down side, the fans are a far bit noisy. More on this in the next section.
With the system bumped up to 3.5Ghz the Kuhler 920 in “Silent” mode is still in the back of the pack, but coming in at 68.25*C its 8 degrees behind the super mega. Moving up to the “Extreme” mode again we have a large jump in performance. Coming in at 60*C the Kuhler 920 comes in at the top of the list of all the self contained kits, beating the Corsair H70 by 2.5 degrees.
With the system overclocked to 4.0Ghz the Kuhler H2O 920 in “Silent” mode again in the back of the pack, coming in at 77.5*C 5 degrees behind the Corsair H70, and 7.25 degrees behind the Prolimatech Super Mega. Switching up to the “Extreme” settings the Kuhler H20 920 comes in at the head of the line at 67*C, 3.25*C better than the Prolimatech Super Mega