Quote: AMD CrossFire Performance - A Bridge over Trouble Water?
Where AMD has definite issues is with HD 7970s in CrossFire, and our Frame Rating testing is bringing that to light in a startling fashion. In half of our tested games, the pair of Radeon HD 7970s in CrossFire showed no appreciable measured or observed increase in performance compared to a single HD 7970. I cannot overstate that point more precisely: our results showed that in Battlefield 3, Crysis 3 and Sleeping Dogs, adding in another $400+ Radeon HD 7970 did nothing to improve your gaming experience, and in some cases made it worse by introducing frame time variances that lead to stutter.
AMD Cross Fire was and still is a mess, updating AMD GPU drivers is also very problematic and AMD's GPUs are micro Micro-stuttering eye sore, Nvidia drivers, visual quality, control panel and SLI put AMD to shame.