Some overclocking info:
These chips have phenominal 2.0 ns ram (rated at 500 mhz). The default clocks are 390 core and 350 ram, so there is huge overclocking headroom!
I was able to overclock it successfully to 465 core and 515 ram on the default cooling. Incredible overclock from this card, this is easily up to x800/x850 pro levels of performance. ATIs naming is a huge mess, but I suppose thats off topic.
New benchmarks to follow.
3dmark05 (465/515): 4558