Benchmarks: Left 4 Dead, Resident Evil 5
Left 4 Dead's performance was probably the least impressive showing from the Radeon HD 5870. While AMD's newest card was able to match the Radeon HD 4870 X2, it was merely 3fps faster than the GeForce GTX 285 and as much as 23% slower than the GeForce GTX 295. That said, however, the Radeon HD 5870 did improve on the Radeon HD 4870's performance by a 53% margin.
Resident Evil 5 scaled exceptionally well with Crossfire enabled; our Radeon HD 4870 X2 saw a 100% performance boost when compared to the single-GPU Radeon HD 4870. The Radeon HD 5870 averaged a very respectable 70fps, which made it just a single frame slower than the GeForce GTX 295 and 70% faster than the Radeon HD 4870, but it still trailed the Radeon HD 4870 X2 by a 20% margin.