I'm hoping for 4.2-4.5 with my current water setup once I toss in this QX9650 and S2E. I'm currently priming a friend's 9650 at 3.82ghz under a Xigmatek, and it's running 70,70,75,75 degC. I needed 1.38 vcore for this. I hope the chip I just got for my rig does better than this.