I just bought a e4400, with no effort at all and all stock voltages I was able to OC to 3Ghz i just changed the memmory settings to 3:4 (i think that's what it's at) I've got it running stable now at 3.33Ghz with minor voltage changes. I've had it running now for a few days, but will try for 3.5Ghz later today. that or i wana lower my multiplier and try for a 400Mhz FSB