So I created the cooler now over a year since my PowerColor 6870 and am very satisfied. The graphics card is easy untervoltet and has in idle at 560 rpm fan speed and 35 ° C under full load at 860 rpm to 63 ° C. The cooler itself would probably even better since but since turning cooling my 3 case fans with 500 rpm is quite warm in case .... The 860 rpm are not really audible from a meter away.
If one has not just 2 left hands can be the cooler also alone mounting. Who writes here that he needs 8 hands should probably would rather go to the PC shop around the corner and not touch their hardware. Build time alone a Mugen 2 a! By contrast, this cooler is easy installation :)
I have the fan by the way clamped to the motherboard and steer him through Speedfan ...