ATI Radeon X1800 XT CrossFire Evaluation
Doom 3 v1.3
Although ATI's recent driver updates have improved OpenGL performance dramatically, their cards still fall prey to NVIDIA in our custom Doom 3 benchmark. Both GeForce 7800 GTX SLI configurations, whether equipped with 256MB or faster clocked 512MB cards, handily outpaced both CrossFire rigs by significant margins. If we focus on performance when anti-aliasing and anisotropic filtering were enabled, the GeForce 7800 SLI systems outperformed either CrossFire configuration by margins ranging from about 20 FPS all the way up to about 50 FPS. Without any additional pixel processing, these margins are even bigger. So, while the 90+ FPS the pair of Radeon X1800 XTs running in CrossFire mode is nothing to sneeze at, it's just not enough to challenge NVIDIA's best within the Doom 3 environment.