Thanks for the review.
It is kinda strange that my Sapphire 4890 OC with stock cooler is factory overclocked to 901/1000 (4000). I wonder why they increased the memory clock but reduced the core clock? Also could you be more spesific about how did you do the game tests. What program did you use? How did you exactly bench the FPS? What was your image quality settings on the ATI CCC? I may be replicate your tests in stock Sapphire and post the difference.