I am running my 1.6a at 150 fsb (woohoo!) but it is not stable (awwww). The motherboard is ASUS P4B266-C. Max temp is 45c. Vcore is set to 1.7, mbm5 is reporting it at 1.63. Prime 95 quits after about 5 minutes. At this point should i boost the Vcore more or boost the ram voltage? To the people who have been answering my questions, thanks. This is my first major overclocking project.