I atleast could've run Crysis on Ultra with my 9800GT in my old PC. I had a few problems here and there, sure, but at least it was better then even trying to start Crysis on this PC with this graphic card to begin with.
Oh well, the problem's solved now anyways. My 9800GT did the job again and now I can enjoy everything on the highest setting available without fps drops, latency bullstufftery CPU overloadthingiditiy or any other problems at all :)