We’ve included the Intel box cooler that’s supplied with its box CPUs (including the i7-2600K) in the report as a reference. This solution hasn’t really changed over the last few years. It consists of a copper core surrounded by aluminium fins, all cooled by an 80 mm fan. The fan is quite compact and is supplied with a thermal pad.
Nothing so simple as to mount this cooler. You just clip it into the holes provided on the motherboards. Very compact, it doesn’t impact on the installation of memory at all.
Only at 12V will it cool the Core i7-2600K in load sufficiently, but noise levels are then rather high. Don’t even think about using such a cooler to cool an overclocked i7-2600K.
It’s hard to look down your nose at a cooler that comes with the processor. It does what you ask of it and can even be quiet in idle though certainly not in load with powerful processors. It has the worst cooling/noise ratio in the report.