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You already own a PS3, so you would only gain access to Xbox exclusive titles. Also, if you wanted to play online with one of those games, you would need to buy a gold account membership, which has been pointed out already. I'm suggesting you go with the graphics card, unless there is a game out on the 360 platform you "must" play, it doesn't seem like a good investment.

Can you give me more information about your computer, i.e. RAM, HDD or SSD, RAID? CPU Processor? Cause if they are all high end then by all means get a GTX 580

Otherwise it's cheaper to buy an XboX 360 Slim.

Hell Yea Greg!!!

Unless you want a bad addiction just get the upgrade to the computer and play the games on there because the best ones are on the computer anyway or the Wii.

Graphics Card. it will look better than 360.

buy a xbox 360 slim

yh gtx 580. and who the fuc* is that barak? ''get hd 6870 it's better'' hahahah hd 6870 is a piece of **** compared to gtx 580, just so u kkow barak amd is losing

buy graphic card for sure....u hav a super computer...every gam will run on high settings.....

PC always performs better thn consols...better graphic nd acc to our needs...

And u should buy ATI radeon 6870 HD ...it will perform better...and around same price...and less power requirements...

ATI is always better than nVidia..

You can buy cheep computer parts off Umart.com

buy the graphics card cause the graphics on consoles suck.

Do both... Thats what i do