will these higher bandwidth solutions ever really come into play? most games don't ever saturate the video card itself because none of these interfaces can compete with the bandwidth of the card itself.
once t&l becomes baseline(absolute bottom) and polygon counts rise, we MAY see some benefit, but i really am not sure of this. i mean, yes we have seen some games that were designed to stress AGP, but the perfomance level is low either way, as i remember it. so low that such cases would be rare indeed. although if DX9 cards are used to accelerate professional graphics stuff like AGP may become more important, as DJB said