you don't need i7 for gaming,
get the following
8gb DDR3 ram 1600
an SSD for OS (~128gb should be plenty)
HDD for storage
and a case of your choice.
This will easily fit into 1400 budget if you don't go crazy on mobo and case.
I second these specs, for 1300-1400 you can build a very nice gaming system. when i saw budget in the thread name i thought you were going to mention under $600.
also, make sure to get some good quality parts like from corsair, intel, EVGA, ASUS, Gigabyte, etc. dont go cheap on parts if you want the system to last.
Also, look in to a good air cooler if you plan on overclocking they did a recent review on air coolers ranging from $30 to $100.