Nope 4ghz isn't doable even with 1.44Vcore! And this is with low vdroop. I'm on 3.92 atm with a 1520mhz cas6 memory config. I haven't primed this yet but I'll do so later tonight . Would it be better for me to go 200x19 and 1600 memory? I gues the extra 120mhz on the CPU help more than 80mhz on the RAM.