trouble with 3-D graphics

[Snake_Man 0]

Ok, first off, I apologize if this has already been asked, I looked for this answer but did not find anything related. I seem to have a wierd viedo problem. I am running, Win XP (SP2). I have a GeForce 3 (64MB), 512GB ram. Whenever I try to run a game with 3D graphics, it is unbearably choppy. These are games that I ran on my old computer (1.6 Ghz, same video card) just fine, but now they don't seem to run. I have re-installed Direct X and the video drivers, I've increased Virtual Memory, DX diag shows no errors, but the Direct 3D tests all run super slow as does the last Direct Draw test (the full screen one). Playing DVDs are no problem, Ive watched several movies with this set up. Does anyone have any ideas of what I can do to fix this?

[peterh 1]

Could be a resource conflict somewhere between the AGP card and some other hardware. Check BIOS settings, Device Manager etc.

 

[Wilhelmus 1]

Have you tried to dropping the video settings like anti-aliasing?

[Snake_Man 0]

If it's a conflict, I can't seem to find it. As far as dropping settings, yes, I have, but these programs have run before on this same video card, so I didn't expect that to make much difference.