I would upgrade the graphics card. Console exclusives for the most part are overhyped.
Nowadays the only time I ever play on my ps3 is when I want to play move enabled games because there are currently no motion controllers for the pc. I sold my 360 because there are very few games that I want to play that aren't also on the PC.
You mentioned wanting to play GOW3 and Uncharted. God of War 3 and Uncharted series get most of their acclaim from looking really pretty for console games. God of War 3 especially is a relatively average hack and slash compared to some of the alternatives this gen in terms of gameplay. Without consoles you will miss out on around 20 80+ rated games a year, only a handful of which you would have probably enjoyed. IMO not worth the cost at all, especially if you are short on cash. Personally my PC backlog has nearly a hundred games most of which I am excited to start playing. You should only get a ps3 if there aren't too many games you are excited about for the PC, but don't get one if you are satisfied with whats coming out for pc just because some ps3 exclusives get a lot of hype. You will quickly beat the handleful of games that you will actually enjoy, find the rest of the games pretty mediocre, and then wonder why the hell you spent so much money on hardware you hardly ever use.
Personally I don't need to play games with everything maxed out so my radeon 5670 should be fine for a while, but next time I need to upgrade cards for games to be playable on medium settings, I will be selling my ps3 to buy a new card. Also this post isn't meant to mock console owners. Some people don't like playing games on the PC or with a keyboard and mouse. Some people don't like to deal with the technical aspects of owning and upgarding a gaming pc or the relatively high upfront cost of buying a good pc. But the threadstarter obviously enjoys playing on the pc and imo if you have a good pc and enjoy playing games on it there isn't any point in owning consoles unless you got a lot of cash to spare, especially the hd consoles where basically 90% of the games get ported to the pc.
