I require help in finding a new Graphics Card + PSU

[banned_03]

Why hello everyone!!

I have this computer,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02072596&cc=us&dlc=en&lc=en&product=4184761&tmp_track_link=ot_search#N168

and I was just wondering what would be the best graphics card (around $160) that will definitely fit in this computer. I would like a graphics card which will run Battlefield 3 and MW3 at 1440x990 resolution at high settings.

I also believe I need a better PSU for a graphics card upgrade, can someone recommend a PSU that will definitely fit in this case, have required power cables and will power the graphics card? for around $50.

Thank you.

 

[banned_03]

I'm looking at a CoolerMaster GX 550W PSU with a GTX 560 TI or non TI.

The GTX requires a 2.0 pcie but I only have a x16. Will it work? And will both these things fit in my computer?

 

[pro-gamer]

x16 is a speed of your pci-e slot and 2.0 is a version nowaday all mobo have 2.0 version so ya you will be fine at all.and also gx550 can handle gtx560.