NVIDIA GeForce GTX 670 Review Feat. EVGA: Bringing GK104 Down To $400by Ryan Smith on May 10, 2012 9:00 AM EST
OC: Gaming Performance
We’ll keep the running commentary short here, but depending on how shader bottlenecked any individual game is, it’s possible for GTX 670 to beat a stock GTX 680 with just an increase of the power target. Without that pesky 8th SMX drawing power this leaves more power for increasing clockspeeds, which helps games that are more bottlenecked by the ROPs and/or GPCs.
Conversely, if a game is extremely shader bound (such as Portal 2), then only a full overclock can make up for that 8th SMX on GTX 680.