I got my EKL Alpenfön - Brocken with the Be Quiet Dark Rock Pro replaced. I run an Intel i7 860 with 4GHz + HT (1,31V), temperature difference to Alpenfön at full load approximately 20 ° C (Alpenfön 80-85C °, Be Quiet 60-65C °). Volume in idle (about 600U / min.) Inaudible, at full load is a low hum to hear (1700U / min.). Mounting the radiator was quite simple and one person in about 10 minutes. to accomplish. Somewhat problematic insertion of the board was in the case (Antec P180 mini, micro ATX) since it must be used at an angle to get past the rear case fan, ultimately had to this but then be dismantled. The memory should have no projecting as this completely disappears under the radiator.
Conclusion:
- Tips Kühllesitung - Very quiet operation - Size of the cooler complicates the installation of the board