kuebk - I don't mean to speak for A-Grey but I'm pretty sure he has LLC "Disabled", at least he did during some recent stability testing. He referred me to some BIOS settings he posted (when running his Q9650 @ 450Mhz x 9.0x) which I printed out and just checked. I had the same results as you greg.m with a small increase in Vtt voltage, really made a world of difference. With that said what do you currently have your Vtt set at?