if u r using 667, yr max is until 333 FSB unless u clock up the RAM as well.. moderate OC in ram is still acceptable.. if cannot boot, try increase ram voltage if u wanna pass 333FSB..

E8400 FSB is already 333 if not mistaken while E7600 is 266.7Mhz

besides, if u r using E7600, u can also lower yr multipler if u wan.. like 333x10 or 11.. not necessary stick to 11.5..

This post has been edited by farscope: Jan 18 2010, 12:36 PM

667 --> 900 is quite a big boost..