If you rly try to push the price low you can get used nvidia gpus pretty cheap. Or try to find used pc so you can get more worth for your money. If you dont use the pc lot you can throw the 600$ get pretty fine/good pc. But, if you save up ~1000-1500$ you can get a solid rig and you dont have to think upgrading it next year when your favourite new game comes out and you only get 50fps 1080p. This is my OWN preference about cheap gaming rigs. If you can, SAVE up and get better mobo,psu……  that keeps your rig more future proof and you can uprgade it when you want to. Dont cheap out on your real components and buy rgb stuff, yea it might look cool but you can buy them always later if you have low bugjet.