So ...
(SCKTN-4000) installed Scythe Katana 4 on Socket 1155 in my Cooltek X1 Midi Tower, was very simple. The 2 metal bracket before tighten the heatsink, thermal grease to spread CPU and then sit on the heat sink carefully. The fan I have not removed during installation of the heatsink is not really necessary, just be careful the 4 stilts in the hole might press at an inaccessible place to take a screwdriver as an extension - Turn Nothing! - Which is intended for the expansion, simply clack and ready.
The fan can be heard during normal activities, hardly, and the temperature is about 26 degrees. The fan has 2 arrows in which the rotational and Pustrichtung appears. It is best to bring the fan so that it blows on the air from the enclosure.
So far, for sensitive ears definitely a buy recommendation, dismissed for overclockers looks kA, ... I just wanted to silence in the normal operating mode and fully met.
