RTHDRIBL
The new driver does little for the XT's performance in RTHDRIBL. The PRO is only slightly off the pace of the 6800 GT, highlighting that measured performance is also dependant on the test being done, rather than entirely to do with any implied capabilities of the hardware. What's also interesting is that the XT is some 20% faster than the PRO, again not matching up as you'd expect, given the differences in core clocks and the fact that RTHDRIBL is pretty core clock bound.
