If you are using the PC strictly for gaming, I recommend just getting the 4670 or the 4670k, K series if you plan to overclock, none K series if you have no desire to overclock. In gaming you will not see a big improvement with the with the 4770, as most games do not utilize hyper threading, the big advantages of going with a 4770, is if you do a lot of video editing, things with adobe programs, such as adobe CS6,and graphic designing, it also has a big advantage in benchmarking as well. No game on the market today, utilizes close to 16GB of memory, most games only need a minimum requirement of 2GB of memory in order to run the game and most games today only need 4GB of memory to run at the recommend settings.
8GB of memory is plenty for gaming today. If you want the 16GB just to have it then by all means it won't hurt anything. If you get the 4670 instead of the 4770, then you can get a 670 instead of the 660TI.
It up to you, I personally like the 660TI, as it has the best bang for the buck when it comes to performance. The 660ti is close to being the same as a 670 and when overclocked it can perform very close to a 680, but the same goes for the 670, when overclocked it will out perform a stock 680. Either way your PC can and will play all AAA pc titles to date at max settings.
Hope this helped you ericlee30 Member Of The Intel Response Squad.
You don't need an i7 look at this build . http://pcpartpicker.com/p/X9Eh.
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