It should perform better than the Ti4200 and the 9200.
The Ti4800SE is just a Ti4400 that's capable of 8X AGP... which it doesn't need to begin with, 4X is more than adequate.
You can probalby overclock it and get Ti4600 speeds if not higher... but you could have bought a $140 Asus V8420S Ti4200 and overclocked it to Ti4600 speeds as well...