Just Cause 2
Just Cause 2 is the first game from our list where the Nvidia GeForce GTX 680 beats the AMD Radeon HD 7970. The gap varies from 7 to 22% depending on the quality settings and resolution. Interestingly, the Tahiti-based AMD card cannot win even when overclocked. The GeForce GTX 680 looks impressive in comparison with the previous-generation GeForce GTX 580, too: the gap is 38 to 47%.
Aliens vs. Predator (2010)
The green team gets beaten by the red flagship Radeon HD 7970 in Aliens vs. Predator, the GeForce GTX 680 lagging behind the leader by 4-14%. The gap is larger in the antialiasing mode due to the narrow memory bus of the new Nvidia-based solution. We can also see that by comparing the GeForce GTX 680 (256-bit bus) with the GeForce GTX 580 (384-bit bus): the former is 33-40% faster without 4x MSAA but only 19-21% faster with 4x MSAA turned on.
Lost Planet 2
The game engine is optimized for Nvidia’s GPUs, so it is no wonder that they are superior here. The GeForce GTX 680 is 9 to 21% faster than the Radeon HD 7970 depending on the graphics quality settings and resolution. It is also 37-44% ahead of the GeForce GTX 580.
StarCraft II: Wings of Liberty
The GeForce GTX 680 beats its opponent in this game, the gap amounting to 100% and more in the antialiasing mode. However, this test also indicates that the GeForce GTX 680 might be even faster if it had a 384-bit memory bus: the older GeForce GTX 580 is faster than the newcomer in the hardest test mode!
Sid Meier's Civilization V
The AMD Radeon HD 7970 strikes back in Sid Meier’s Civilization V. It beats the GeForce GTX 680, enjoying a big advantage of 28-33% with enabled antialiasing. Take note that the Kepler-based card is a mere 4-6% ahead of its Fermi-based predecessor when antialiasing is turned on.
Tom Clancy's H.A.W.X. 2
The GeForce GTX 680 is but barely ahead of its AMD opponent in Tom Clancy’s H.A.W.X. The GeForce GTX 580 is also as close to the leader as 5-8%.