Better cpu or gpu?

I don't understand why you can't 1920x1080  

I would go with the Phenom build. Games are mostly GPU intensive.

P.S - The 7950 is about the same price as the 660 Ti but has better performance.

using 660Ti or 6870 at 1360x768 just wasting your money..

7770 will serve you flawlessly in any game at that resolution..

save your money to buy fast ssd and bigger harddrive..

I agree with Quaddro, a 7770 is perfect for that resolution. An SSD would bring a lot of performance to that rig, especially in load times between levels, its almost instant. I would not buy an OCZ power supply though. Although they did buy PCPower and Cooling, which makes good power supplies, OCZ is not recognized a a good psu builder. Also, they are in financial collapse right now. I would go with a Seasonic 520w modular unit from newegg for 69 bucks.

Well not in my country, gtx 660 ti is cheaper and why not full hd? Because my wife doesn't like my hobby- gaming therefore very limited budget for it sooo
I would pick your answer as the best but i'm on iphone and i don't know how  
And i thank you all about advices on psu and hdd/sdd but i need the pc that would last as long as possible without upgrading
Thx all for you time

May depend on the store. Where are you from?

And no, this is a discussion-type thread, there is no best answer option.  

If cost is an issue, I would go with the Phenom II and the HD 6870. At 1360x768, that combo won't even break a sweat. And if you later move up to a 1080p HDTV/monitor, you will still have enough for fast frame rates.