I just upgraded from an FX5500 to this 6600GT, my computer is an Athlon XP3200+, gig of ram, Coompaq motherboard(crap). In Astanaar I put the FPS counter and did some runs from the same spot to the same spot, after giving a few seconds for my computer to load everything(it gets jerky for the first few seconds after I log-in but it just has to put everything in RAM). Any way I changed the Pixel shaders, the terrain detail, highlights, gloweffect and even changed resolution from 1280X1024 to 800X600, AND forced Anti-aliasing through the driver settings and NO CHANGE AT ALL in FPS. The only settings that changed the FPS where the Terrain clip plane(going from farthest to nearest probably doulbled the FPS, made sense), the Object clip plane(big difference when brought in near, I understand this one too), and the vertex animation (slightly affected FPS) and that Details box(slightly, I think it compresses unused textures or something I don't know). Now with my old card I knew it was the bottle neck, could my Compaq motherboard(that downclocks my PC3200 to 333mhz) be creating this? I mean it dips to 19-mid 20's as I run through Astanaar, it increases as I leave to 35-up FPS. And it drops to mid 20's or so in Iron Forge by the AH. Any ideas?