The GF3 Ti200 should be alot faster than your GF2 GTS. It depends alot on what type of memory is in your computer now too though. I have heard people with SDR ram and they were getting less from the GF3 Ti200 than their old GF2. It's definitely a personal call, I don't think I would upgrade my GF2 GTS to a GF3, I would probably skip a generation cause I'm not made of money.