I have a Gigabyte Radeon 6950, and an AMD Phenom II X4 995 processor, but I get major performance issues in GTA IV, which is a very buggy game anyway, but it lags a lot more then it should.
Is my CPU holding back my graphics card or is this just a problem with GTA.
The 995 should be fine with that game. I really can't see what would be holding it back.
It is a super buggy game, but there are old Athlons with crappy $50 GPUs that can run it medium detail no problem.