Core 2 Extreme QX9650 is extremely stable at 4.42GHz speed using a good CPU cooler from Scythe paired up with a good overclocking board like ASUS P5E3 Deluxe.

Significant performance boost in 3DMark06 CPU and SuperPI 8MB tests. Up to 43% boost in 3DMark06 CPU performance and SuperPI 8M calculations finished almost 50 seconds faster! QX9650 is screaming to be overclocked!