The EVGA GeForce GTX 670 FTW resembles the GTX 680 much more than the GTX 670. The clock frequencies, the PCB, and the cooler are all from the GTX 680. Only the lower number of shader units reveal the fact that it's actually a GTX 670.
You do software updates to get the most from favourite programs right? Updating a motherboard BIOS can in a timely manner is also critical. The guide to Flashing a Motherboard BIOS spells out the often complicated steps in plain english. PCSTATS Tips