I have an MSI 970A-G46 running an AMD FX-6200 and I had a GTX 650 Ti. I was hitting about 4k on lower settings. I upgraded my video card last weekend to a GTX 1060 6gb and now I'm hitting 8k with maximum settings. So long as your PSU can handle it (mine is 750w) then going up to that series of video card should give you a nice boost. A 7k score gets you Extremely High.

If you can upgrade the motherboard so you can use the Ryzen processor series then do so. I'm doing fresh builds for myself and my husband later this year and this was just a stop-gap so I wouldn't have any issues in SB for a few months. But keep in mind that will require a motherboard, processor (different socket), and memory upgrade since you'll be going from DDR3 to DDR4, and you'll want a new video card rather than carrying the 650 over.