Krantos said:
Considering the types of things you can do with the current gen, I doubt that PC's are being held back that much.
http://www.hardocp.com/images/articles/1286442355tCXafRvsMc_2_5_l.gif
5760x1200 is 6.9 megapixels, the standard of 1280x720 for consoles is 0.9 megapixels
(which many games including Black ops, Alan wake even Halo: Reach failed to reach at 1152x720)
Those are not even the most powerfull graphics cards available 5760x1200 is 3 seperate 1920x1200 displays running off a single computer.
The cheapest set of graphics cards is the red line Sli GTX 460 that is about £280 which will drop in price way before the next round of consoles appear.
http://www.hardocp.com/images/articles/12788968667K0gVsvzTK_4_2.gif
but even a single GTX 460 for £140 is complete overkill if you more than halved the resolution and knocked 14xAA Sample rate off to give 1280x720 2xAA.
The power of the modern desktop PC is massivly underused on cross platform and ported games.