hello need a lil advise here iv got a x4 760k cpu and im wanting to upgrade but on a low budget I no I will need another motherboard was looking into a fx 8320 would I get better performance from that im also running a Nvidia GeForce GTX 670 MSI OC Edition
Going from the 760K to a 8320 isn't much of a upgrade, I would suggest continue saving up until you can afford a decent Ryzen CPU such as the 1600, B450 Motherboard & DDR4 memory @3000mhz+.
A 8320 is a upgrade over a 760K just not a large one, you might gain 15% in the best situations and that is expecting you to be highly overlocked. You should aim a little higher, the lowest I would consider would be a Ryzen 1200 you can find those used for around $65 and that will net you around 20+ FPS.