The True Spirit 140 cools my i7-2600K at maximum processor utilization to approximately 45 ° C and offers very good reserves. Who overclocking will need have no fear that the CPU is too hot. Those like me who just want to have a silent system may decrease the speed of the fan quiet (in my case at present to 800 U / min) and receives a super silent CPU cooler. Even with the 800 U / min, the processor remains in the green zone.