Far Cry performance
We've already seen the sub-optimal Far Cry performance a number of times. What we can gather is that the Pro - which, remember, is just an underclocked XT - is nearly 20 per cent slower than the range-topping model.
NVIDIA's cards produce decent performance, however, and the 320MiB variant is only found lacking at the frame buffer-busting 2560x1600 setting.