yeah, and as far as I can tell, the differences between the XT and the Pro are:
A) the XT does hyperz compression to 24:1, whereas the Pro does only 8:1, although this doesn't seem to have much of an effect on frame rates.
B) The XT has a factory clockspeed of 500 MhZ, and the Pro has one of 400. The Pro's chip isn't locked at 400, and easily overclocks to beyond 500mhz, using software that adds an extra window to the "monitor properties tab".