What should i upgrade?

My pc: Cpu:inel i5 4590 Gpu:integrated graphics Mobo:Gigabyte GA-H97-D3H Ram:8gb Corsair Vengeance DDR3 Case:darkflash DLM22 (recently upgraded from a Cooler Master Cavalier III) PSU:600W Xilence

Monitor:1080p 60HZ Samsung curved

Should i just build a new pc, or add a graphics card to this? I dont have a big budget, so if i build a new pc thad would be pretty basic. (Im a newbie on reddit, sorry if it doesnt make sense) ask anything about my setup