airborn824 :
I still don't have the computer it but I will buy this:
Link
That's fine. It has a 2 year warranty so you'll notice any problems (if there are any) within that timeframe. My only gripe is that the PSU isn't too awfully efficient. Not a problem, but it would save you some money.
Now how much are you paying for the R9 270X? Because I can only seem find it for the same price as a GTX 760, and the 760 is a much better GPU. I recommend you look into getting the 760. Also, you if you want to be able to SLI/Crossfire GPUs later, you will want to get a slightly more powerful PSU. Like 700-750W. Just a thought.