Okay guys, I have a bit of a dilemma with this board.
Let me start by saying I have an E6750, batch # is L722A559. Google this and you'll find a Norwegian forum showing that someone's overclocked this batch to 3.6 Ghz on 1.5v.
I'm combining said CPU with a Scythe Ninja, Yate Loon medium speed 120mm fan, and Arctic Silver 5. Idle temps are ~22C.
Simply put, I cannot get any higher than 425 FSB on this board. I've bumped MCH and ICH voltage, maxed VTT voltage, added a fan to the northbridge for extra cooling, and have DDR2-1000 G.Skill RAM clocked 1:1.
My current wall is 3.4 Ghz. 425x8 is the highest I can go before I have to push voltages beyond 1.51v, which I don't like doing one bit.
Is this the board or the CPU at fault? The Northbridge is cool to the touch, PWM (VRM) sensor never goes above 60C.
Oh, and most importantly, I am testing these OCs with Orthos blend.