How do these components look for a gaming computer?

not an expert or anything; but i'd say more ram and switch up for a board that supports PCI 3.0 so he has better options in the future.
 
You don't need a 750w power supply on just a single graphics card.

It's overkill unless he's planning on adding a 2nd card later.

I got the exact same power supply except 650w last summer at newegg with a rebate for half the price he's paying for the 750w
 
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