Benchmarks: World in Conflict, Wolfenstein
The Radeon HD 5670 was only able to match the performance of the GeForce 9600 GT when testing with World in Conflict at 1920x1200. It lost by a couple of frames compared to the 9800 GT and was 14% faster than the GeForce GT 240. Interestingly, at 1680x1050 the Radeon HD 5670 and GeForce GT 240 both produced the same average frame rate. It was easily outclassed by the Radeon HD 4770 at every resolution, however.
Finally, running Wolfenstein at 1920x1200 the Radeon HD 5670 was able to average 35fps. This made it just a single frame slower than the GeForce 9600 GT, which is obviously a disappointing result, and as much as 17% and 22% slower compared to the Radeon HD 4770 and GeForce 9800 GT respectively.