4x PCIe is definitely holding that 8800GT back. A new motherboard and some OC on that CPU will make a HUGE difference.
Motherboard:
http://www.overclockers.co.uk/showpr...=5&subcat=1155
Memory:
http://www.overclockers.co.uk/showpr...atid=8&subcat=
Motherboard:
http://www.overclockers.co.uk/showpr...=5&subcat=1155
Memory:
http://www.overclockers.co.uk/showpr...atid=8&subcat=