as long as you have good cooling and with some luck, a ti4200 is all you need. the extra 30-40 is a waste of money for a ti4400. all you have to do is overclock your card. generally you can get cores to 300 easily, with memory its all the luck of your ram or your cooling. if you do want to spend that extra 30-40 spend it on a card with more features, such as tv-out or vivo.
Athlon XP 1.58GHz | MSI KT3 Ultra2 | 256MB DDR PC-3000 | GeForce 4 ti4200 64mb @ 310/533 | IBM 120GXP 40.0GB | Det. 41.09 | DX 9 RC2 | Win XP SP1