Hi! Today I was modding my Powercolor HD6950 to HD6970. Every step like w1zzard said. I've updated powercolors bios for powercolors 6970. Everything is fine, more shaders (1408 to 1536) no artifacst, low temps etc. Except the performance Stock HD6950 is 4 times better than updated card oO. Modded HD6950 is worse than GF450. My specs: Intel Core 2 Quad Q8300 2.5Ghz @ 3.37 Ghz 2x2 GB DDR2 800Mhz @ 900Mhz Asus P5B (newest BIOS 2104) Corsair TX650 Im giving you 3 attached screenshot from unigine heaven benchmark in htmls report style. Can you help me to find the solution of problem? Greetings.