UnOfficial Asus Rampage II Extreme Thread

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Hi all. I'm just about to go for 4.0 on a 920 w/TRUE and Corsair Dominator 1600s. I'll probably go for 190x20 and ensure its stable there, and then head up to 200x20. I have all the power saving features and stuff off (no speedstep, no C1E etc..). Hyperthreading is on, and I'd like to keep it that way.

Can anyone suggest voltages that should take me there? I hear CPU voltage should be 1.35 or so. I don't intend to bring Bclk above 200 or anything. I keep hearing conflicting reports if I should set any of the other main voltage besides CPU to anything except auto. I'm on Bios 1104.

Edit: Testing with 1.35 CPU and 1.65 RAM I've gotten through one LinX pass, taking it to 80c under load. Is this okay? Its around 45 idle. Also, my RAM has defaulted to 2T - think its safe to set it back to 1?

Thanks!