What you're going to want is something like a GTX 960 or R9 280 that will fix the 1280*720 issue playing on low settings, and you will want a good quality 550-650W power supply. I don't recommend upgrading to an FX 8320 on a motherboard that only has 4.1 power phasing on the mosfets. If you go the way of the GTX 960 (if you can find one for a good price now), all you would need is a good 500 watt unit, however my recommendation is something like a nice eVGA 600-650W PSU, and a GTX 960 or R9 280/380.