Re: NVIDIA GTX 280 Series 55nm cards...How will they perform???
I expect it to be similar to how the 8800 GT was to the 8800 GTX. nVidia will probably focus their .55nm cards on cost cutting and not performance. I expect things like the 512-bit memory bus will go and be replaced with GDDR5. I expect the 280 GTX to remain nVidia's top end card, but the .55nm cards with be similar to the 4870 and offer competitive performance at a much cheaper price compared to the 280 GTX.
The goal of their .55nm cards will be to allow them to be price competitive with ATi which they currently are not.