Okay........I upgraded to an AMD64 3500+ and an MSI K8T Neo2-F mobo. I still have my 1024g ram and a 128m 9800pro. XP Home SP2 with DX9.0c installed. This "new" system is exactlty as my old one, excpet it was an AMD Sempron 2800+ and MSI KT4AV board. Same vid card, same ram......same OS. My HUGE problem here is that now GTL demo, and F1c are seriously choppy in comparison to my OLD setup. I reformatted and reinstalled XP Home. New 5.10cats......I get about 1 frame every 5 secs in GTL, and F1c runs smoother than GTL, but it has chop in the spinner (where the car you've chosen spins horizontally) and it is not anywhere near as smooth as my old setup. I reinstalled both F1c and GTL to see if it made any difference, same thing. I bought the mobo and CPU so that I could RUN GTL......a little resource hog. Well, in an effort to upgrade for a NEW game, my old game(s) runs worse than before. I flashed bios to newest, all drivers are new and updated. Any body have any ideas ?!?!? Sorry, VIA K8T800pro chipset