Soldato
Return 1 of your GTX680's and buy these:
Mobo:
http://www.overclockers.co.uk/showproduct.php?prodid=MB-493-AS
CPU:
http://www.overclockers.co.uk/showproduct.php?prodid=CP-360-IN
RAM:
http://www.overclockers.co.uk/showproduct.php?prodid=MY-299-CS
Total: £240
Gives you £200 spare left when you subtract it for a refund of the 680.
I thought PCIxE 3 wasnt supported fully untill Ivy bridge? Thats a tasty cheap deal there, im looking to upgrade but was waiting for Ivy Bridge.