what's the diffrence between the two 9700's

[Seven7]

I have been thinking of getting a new computer for a while now as mine is a litte (actually real)slow both in speed and internet connection.

The question is if anybody can tell me if there is really a diffrence between the:

128MB DDR ATI RADEON 9700 TX Graphics card with TV-Out & DVI
+
128MB DDR ATI PADEON 9700 PRO Graphics card with TV-Out & DVI

other than the price diffrence is there really a diffrence in performanc that is worth the money.

thanks

is the 9700 TX even a good choice compared to others also?