The AMD Radeon HD 7990 wins the first test. Although it doesn’t have an overwhelming advantage over the GeForce GTX 690 anywhere in 3DMark, it is ahead in each of the three test scenes. The GeForce GTX Titan is inferior to both dual-processor cards.
Unigine Valley Bench
It is the GeForce GTX 690 that goes ahead in this benchmark and stays ahead even at the high-quality settings with enabled antialiasing, although the larger amount of onboard memory should have given the Radeon HD 7990 an edge in that case. The GeForce GTX Titan is third again.
Metro 2033: The Last Refuge
The situation changes in favor of AMD again as the Radeon HD 7990 wins in three out of the four test modes. It is only at the lightest settings with 1920x1080 resolution and without antialiasing that the Nvidia GeForce GTX 690 offers the same average frame rate as the Radeon HD 7990 and twice its bottom speed. Running ahead, we can tell you that the dual-processor card from Nvidia is going to deliver higher bottom speed in some other games, too.
Total War: SHOGUN 2 – Fall of the Samurai
Nvidia’s dual-processor card looks preferable in this game but the AMD Radeon HD 7990 beats the GeForce GTX Titan, which costs the same money.
The situation changes in favor of AMD here:
The Radeon HD 7990 enjoys a larger advantage at higher graphics quality settings. On the other hand, the difference between 100 and 94 fps is imperceptible. The bottom frame rates of the two dual-processor cards are comparable, too.