An extreme stress test I have not done, but when playing the CPU is quite well utilized. From the fan is no sound, even after extensive Gamesassions. The remaining fan inside the housing are also aligned with low-noise.
Because of its size, the installation was a bit fiddly. But the expansion of the motherboards (Gigabyte P55-UD3) was not necessary. Graphics card and power supply had to evacuate their place, however, for a short time.
Since the radiator now sits on the right just above the graphics card and the memory surmounted, these are a bit warmer. Who runs these components already at the limit, should rather engage in a more compact cooler.
Little info on the edge: included thermal compound also contained. For my purposes, this was more than adequate. Overclockers will want to secure access to a higher quality paste.