Performance in First-Person 3D Shooters
This game doesn’t support display resolutions of 16:10 format, so we use resolutions of 4:3 format instead.
This game is not a heavy test today, and the Radeon HD 4870 CrossFire just cannot show all its worth here. As a result, this subsystem is just somewhat faster than the CrossFire configuration with two Radeon HD 4860 cards. Of course, there is no difference between the 4870 X2 and the Radeon HD 4870 CrossFire.
The speed is high even at 2048x1536, so you may only be troubled by the tremendous power consumption and heat dissipation of this graphics subsystem, which is as high as 260 watts.
BioShock doesn’t support FSAA when running in Windows Vista’s DirectX 10 environment. We benchmark graphics cards without FSAA in this game.
CrossFire mode is not stable in most cases and doesn’t provide substantial performance benefits compared to the single card. In this case ATI Radeon HD 4870 CrossFire has enough resources to maintain comfortable performance at 2560x1600 where it doesn’t yield to the ATI/MD flagship solution.