i recently upgraded my geforce 4 mx 420 video card to a gigabyte radeon 9600 pro. i have a dell dimension 4550 2.4 ghz 512mb ram computer. i tried to run counter-strike:source at the same low settings and low resolution as i ran it on the old video card, but the fps was just as bad, if not worse. also my mobo only supports up to agp 4x and the card goes up to agp 8x. could this be the reason why my new card is performing so bad? also, the overclocking program (v-tuner 2) that came with my 9600 pro has the default CORE CLOCK: 400 mhz MEMORY CLOCK: 406 mhz......BUT the advertised memory clock for the 9600 pro is 600 mhz! is this again b/c my motherboard doesn't support agp 8x?