Looking at the numbers, the 7900 GTX / GS is better. Do note (I am not sure about this) that the word "shared" may mean the video card uses your systems RAM GeForce Go 7600 Memory Interface 128-bit Memory Bandwidth (GB/sec) 16 Fill Rate (Billion pixels/sec) 3.6 Vertices/Second (Millions) 550 RAMDACs (MHz) (not needed on tft) 400 GeForce Go 7900 GTX Memory Interface 256-bit Memory Bandwidth (GB/sec) 38.4 Fill Rate (Billion pixels/sec) 12.0 Vertices/Second(Millions) 1000 RAMDACs (MHz) (not needed on tft) 400 but ofcourse a graphic card and memory aren't the only factors. CPU, hardrive speed, memory speed, etc Also make sure you keep your software in good shape, ex: latest drivers, clean up windows, few background processes, fixed virtual memory, etc