they should definetly change the name, I was wondering about the specs myself, and nowhere on NVidia's site did they mention a TI4800 GPU chipset. What chip is it? A TI4200 overclocked? Or is it a TI4600 with slower memory. Either way, it doesn't deserve the right to be called TI4800 thats simply false advertising.
Maybe they should simply call it "GeForce4 TI-8x"