@Jurassicc
9100 and 8500 have the same chip, but are not the same card.
Look here, the clocks are different:
http://en.wikipedia.org/wiki/Radeon_R2008500
coreclock: 275 Mhz
ramclock:275 Mhz
9100 only
coreclock: 250 Mhz
ramclock: 250 Mhz
It is a 8500 LE.
The 8500 Xt has nice clocks. :)
Coreclock: 300 Mhz
Ramclock: 300 Mhz
But the two cards don't work with Warp3D/miniGl at the moment. I hope we can see the greate performance of the R200 chip soon.
The 9250 modells with 400 Mhz ramcore are very rarely. The 9000 Pro is definitely the fastest card at the moment.