Performance in Semi-Synthetic Benchmarks
Like in most gaming tests the Radeon HD 4670 CrossFireX offers excellent scalability that approaches the theoretical maximum. It is ahead of the Radeon HD 4850 and (in the SM3.0/HDR tests) comes close to the Radeon HD 4870 1GB due to the high frequency of its cores (750MHz).
Futuremark 3DMark Vantage
We minimize the CPU’s influence by using the Extreme profile (1920x1200, 4x FSAA and anisotropic filtering). We also publish the results of the individual tests across all display resolutions to provide a full picture.
The CrossFireX tandem is just as efficient in 3DMark Vantage as in 3DMark06, but inferior to the other tested solutions including the Radeon HD 4850 and GeForce 9800 GTX+.
The Radeon HD 4670 CrossFireX feels better in the second test, successfully competing with the GeForce 9800 GTX+ and Radeon HD 4850. It loses to these cards at 1920x1200, though.