I need some help on voltages and clock speeds. I currently have mine running at 3.8GHz (190x20) with Vcore @1.24375V, VTT @ 1.170V. RAM also overclocked from 1333 to 1520 9/9/9/24 1.5V. Power saving features are all enabled. Turbo is disabled. These settings are perfectly stable. I can run Intel Burn Test (IBT) for hours without getting an error. Like anyone else, I want to push it further (4GHz is such a awesome figure to reach even though it is only a 200MHz uip). Heck, I'm only at 65C in IBT so I have more headroom, right? But the thing is, I cannot get it to work any faster. When I try 200x20, it would not boot because I guess the VTT is not enough. So I increased VTT from 1.170V to 1.250V, but I set it at 200x19 this time. Same clock as before, but higher VTT. I also lowered the RAM to 1200 (x6 multiplier) to rule it out as a cause of instability. But when I ran IBT with the new settings, it would fail in the second run. The first value and the second value are different from each other. What gives? What should I do to make it to 4GHz? Previously I have tried everything up to 1.4V on the Vcore and settings everything else to AUTO, but couldn't run it at 4GHz stably. How should I proceed from hereon? Any help is much appreciated. P.S. I can however enable 21x multiplier, but then I would have to disable power saving options. I don't know if it is this motherboard, or how things just are, but I don't want to lose the power saving features. If I cannot push any further without disabling power saving options, so be it!