All this talk about specs, yet the only way ultra-powerful PC's (owned by a fraction of PC gamers) will get close to their full potential, is when next-gen game development gets into full flow.
As we stand today, these PC's are going to waste, playing games designed for 8 year old hardware. As we move into next-gen, devs are not being held back by hardware - but budgets, time and talent.
The new consoles will move the benchmark higher (10X more power or whatever), devs will work within this framework, we'll see more ambitious games and a 1080p target. If you have an all singing, all dancing PC, what extra benefits will you get - higher res, which isn't needed when played on a HDTV, and perhaps framerate.
With top-tier PC's, it's really a case of bragging rights, even the latest games will not take full advantage. Once you start moving down the range, it's arguable how such PC's compare with next-gen consoles, without the brute horespower you're likely to run into performance problems the refined closed box consoles can deal with.
