EVGA Signature 2 FTW (680 pcb; the KING OF 670's; )
ASUS Direct CU II (custom 670)
Gigabyte Windforce OC (680 pcb) / MSI Power Edition (custom 670) / EVGA FTW (3-way tie)
Zotac Amped falls somewhere within that crowd also.
These particular 670's perform so close, it really does not matter what order
Most efficient & coolest out the bunch...
ASUS Direct CU II / Gigabyte Windforce OC / MSI Power Edition / EVGA Signature II
...not when you those 670's that you & I are talkin' about
Edited by drBlahMan - 3/6/13 at 7:52am