Pros: Full load temps dropped 10C after using stock cooling on my X2 5600.With cool & quiet idle temps of 28C.This really is an impressive looking heatsink and I like the green light.I didnt install the fan controller that came with it.Enabled Q-fan in bios and fan speed are from 1800-2300.quiet enough for me.
Cons: At first I wasnt sure I had installed the retainer clip properly but it is working great.
Other Thoughts: nice fit on my asus M2N32 SLI deluxe motherboard.Had to remove the ait guide from my cooler master Centurian case.After first fumbling with the clip it really did go on quite well.