CrossFire Performance And Scaling
It’d be a cop-out to not put AMD’s CrossFire technology under the same scrutiny, right? Here we see the increases moving from one to two Radeon HD 5870 cards. Metro 2033 is missing because these boards simply can’t handle the title with anti-aliasing turned on.
The raw data might not be very indicative, but the scaling numbers are much more telling. At the very worst, CrossFire increases performance by 23%. At the very best, it’s good for a 79% boost (ironically, in Call of Duty). That’s a much wider range of improvements, and Crysis actually sees performance drop to 41% of baseline at 2560x1600—an issue we’ve seen over and over at 2560x1600 with AA turned on.