Originally posted by: hennethannun
from what i've read, the XP-90 is roughly equal in performance to AMD's stock 4-heatpipe cooler (that comes with newer FX and high-end X2 processors). I have one of those heatsinks on my 4400+ 89W and I can hit 2.75ghz at 1.37V with load temps of about 55C (61C on core temp). I am pretty sure I could go a bit higher 2.8 or maybe even 2.9 with a more powerful heatsink, but I didn't want to go much above 60C (even though the chip is rated up to 71C). In any event, your XP-90 should be sufficient for a pretty serious OC, but if you had dreams of hitting 3ghz, you probably do want to get a better heatsink...