It would depend on how they separate themselves from the PC. Currently I'm running 2 7970's so I'm confident I will be able to play next gen games beautifully for a couple years. However I'm also a fan of stuff that traditionally doesn't come out on PC like Final Fantasy(if it ever gets good again), Metal Gear, Insomniac and Sucker punch games. If they can make the PS4 feel like it has a real separate identity from my current PC I'm totally willing to pay a large sum of money for a powerful system. Ultimately I want to be able to play any game that looks interesting to me, so it's up to Sony to make me feel like I need what they are offering right now if they want a sum of cash north of $500 from me. Otherwise I can wait until I feel it's more reasonable and enter the market with a backlog of games to play while I stick with my PC to hold me over.