I'm having some serious problems with stability. It seems to have gotten worse after I did this mod... At both stock and each bios setting I have tried so far the system just freezes and stops responding completely after 10-15 minutes. It seems this happens a little bit quicker during torture testing but it can also happen randomly whilst browsing the web.

So far I havent been able to pin the cause of this down... Just before the system stops responding the graphics of the taskbar changes - then the desktop icons changes colour when I click on them - although this varies from time to time. Sometimes it just seizes to respond - although the mouse cursor can still be moved around but system is completely dead... :