If you can run your MB at 133bus, you may want to consider a 700e. I just received mine from buy.com for 173.95 - 30 coupon with free ship = 143.95 and put it in this morning. Set the IWill slotket II on my P3V4X to 133 and booted to 933 without any strain. Been running Seti ever since 10:00am for burn in. Just a thought.