I just installed the Thermalright SLK-900 heatsink + 80mm case fan. The processor temperatures went from around a normal temperature of about 129 Fahrenheit idle temperatures (not sleep mode), to about 107Fahrenheit. I definately recommend this heatsink to everyone, but I don't recommend trying to install it if you don't know a lot about building computers. It is very time consuming. You are required to unplug almost everything so you can take out the motherboard and install the heatsink. That's never fun for because I worry about the possibiltys of static electricity shocking the motherboard or something similar and harming my computer. It is well worth it though. If your thinking about getting a heatsink I definately recommend this one!