Summary: The Good: I tried running a PhenomII 965 BE with the stock cooler, Major Overheating issue!!. Installed this, now Prime95 runs 12+ hours without exceeding 55C. You Need a "Long" screwdriver to fit though!! (You Need too screw through the gap left by removing the fan). Also it's a tight fit, on boards with large heatsinks on Northbridge and mosfets, and you'd best fit Ram DIMM 1+2 prior to installing as it's a real squeeze, especially with large RAM heatspreaders.
Summary: The Good: JUST AWESOME!!!!! My temps dropped 8-10 degrees celsius. Very Quiet. Extremely efficient. I have an i7 930 Oc'd to 4.3 Ghz 12 GB RAM. Asus p6x58d-e. I had the arctic cooling 7 pro rev 2. . I was at 43 idle, 52 under load, max at 62 for a few seconds. Now I am at 36C idle, 42C under load, and max out at 53C for a couple of seconds sometimes. the temps I am at now are only 3degress C higher than I was before at stock 2.8ghz. For intel its a breeze to install.