Which GPU should I get? Picking between an AMD and Nvidia

[Gilfun]

Hey there! I've been looking around for a new GPU to play the latest games (Bioshock Infinite, Tomb Raider), and I've narrowed it down to two cards.

Desktop I'm upgrading - http://h10025.www1.hp.com/ewfrf/wc/document?docname=c03500676&tmp_task=prodinfoCategory&cc=us&dlc=en&lc=en&product=5297072

Card #1 - http://www.newegg.com/Product/Product.aspx?Item=N82E16814121660
Card #2 - http://www.newegg.com/Product/Product.aspx?Item=N82E16814150605

Thanks for any help you can give.

 

[margag_]

Those two are in the same category http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107-7.html
I would go for the 256 bits of the 7870 vs 192 for the 660.

 

[Swordkd]

Neither unless you've already upgraded your 300w PSU.

After that, I don't think you'll see a big difference between either video card.