The installation of the Kühler H2O 620 is not difficult but it is a little overcomplicated and takes time. To begin with, the user has to prepare the backplate and the retaining ring for installation onto the motherboard by installing the threaded metallic inserts and the adhesive tapes on the backplate and insert the plastic offset clips onto the metallic retaining ring.
After the backplate and the retaining ring are ready, they have to be installed on the motherboard by using the provided screws. The user must not tighten the screws at this point; they are to be left loose until the cooler is inserted and then tightened onto the CPU core.
The final step is to place the base of the cooler onto the CPU core and lock it onto the retaining ring by slightly rotating it clockwise. Finally, the retaining ring needs to be tightened up so that the base of the cooler is firmly secured on the CPU core. Do not use excessive force; the plastic offset clips are not designed to handle too high a pressure.
The Kühler H2O 620 water cooler barely takes any space on the motherboard at all; however the radiator needs to be placed close to the CPU area, which means that this product requires a case with a 120mm exhaust fan slot at the rear or top of the chassis.