I just bought two new Sapphire 7950's from Newegg: http://www.newegg.com/Product/Product.aspx?Item=N82E16814202026 The clock speeds (925/1250) doesn't change whether I have Boost on or off. What I did noticed though is that I'm getting better performance and GPU usage with Boost on. See picture: Heaven Benchmark Boost OFF Heaven Benchmark Boost ON I also notice they have different BIOS: BIOS with Boost OFF BIOS with Boost ON What exactly is going on here? I tried flashing 015.030 on to my 2nd card (replacing 015.029), but for some reason it didn't like it and the clocks would stay at 0MHz LOL. Any suggestions?