I975 chip, if you can find one, A Gem!!They moved so fast to the 980, they forgot how good the 975 is...Google it.. Cheers, I have one, Love it!!:thumbup: But the New Sandies are cheaper, NOT!!! You need new MOBO Too.. Then must consider your GPU's for MB...Stay Strong or go Sandies for whole new build. They are nice, If you can rebuild! memory to 2 instead of 3 too,,so, Upgrade or Rebuild...I am good with the I7!!!!