Oblivion lags

I can't believe there are people still out there in the world that believe a 5000 series graphic card is adequate for gaming. And yeah, 512 is fine to play the game in lower settings, my friend has a 9600XT and 512mb of ram and he plays the game acceptably. Of course his card can't even run the most recent shader effects so that helps tremendously for speed. It's like running half-life 2 on a low-end card and running everything at max; you aren't running "everything" at max because you can't even enable all of the bells and whistles to begin with.

Yeah, to the point. Get a new PC. Pentium 2.8 is a bottleneck for newer cards, and I imagine you don't even have a PCI-E slot on the machine (so the best you could even do is a 7800GS which is pretty inflated price-wise for it's performance). Really, with the slow processor, the low RAM and the ass video card; was there ever any doubt the game would run like shit?

Jam it back in, in the dark.