I have had rather dismal results with mine.
It's in an ASUS M3N-ht along with two 2gb stick of patriot Viper EL8500 (1066) with 5-5-5-15 for stock timings @2.1v I can't seem to get it past 10% or so stable. I
need to add that untill I got this chip all my CPU's had locked multiplyers so i'm new to this way of O/C previous attempts were FSB only.