I really would *not* get a GF3 Ti200. Get a good ole regular GF3 or GF3Ti500. Or if you cannot afford either of those, go with the GF2 Ultra, it has faster memory speed than the Ti200 and its cheaper.
On my old 1.2 Tbird, I was running a GF2 Ultra. I bought a Ti200 for a friend, and tested it out. I got the same fps with my ultra.
Nim