I played GTA V for about half an hour then I turned my PC off and I touched the mosfet heatsinks and after about 2 seconds I had to lift my finger off the heatsink because it was so hot. My motherboard is a GA-970A-UD3P and my CPU is an FX-8320 overclocked to 4.1Ghz
Found this 280x that's cheaper than the cheapest gtx 960: http://www.amazon.com/Sapphire-Radeon-PCI-Express-Graphics-11230-00-20G/dp/B00IZXOW80/ref=sr_1_3?ie=UTF8&qid=1428613638&sr=8-3&keywords=280x
I was thinking more along the lines of a 750w PSU like this one which is a very reliable PSU: http://www.amazon.com/XFX-Single-Modular-Certified-P1750BBEFX/dp/B00B88Z314/ref=sr_1_1?ie=UTF8&qid=1428603707&sr=8-1&keywords=xfx+750w