You've done a pretty good job for your budget. Choosing Intel over AMD seems to be the far better choice now and into the foreseeable future. Nvidia's drivers coupled with EVGA's Precision control software are very competent right now. A 650W PSU is more than enough for your system (even with your system under full load - you would be very surprised). Maybe do what those guys said and see if you can squeeze out a little more cash for a 760, since you're going to be looking at a ~$50 difference there, with a significant increase in performance. Also maybe see if you can find a similar Western Digital drive instead of the Seagate, as WD drives are in my experience a bit more reliable and less prone to making a lot of unwanted noise.