Basically i want to play rust, cs:go. gtav and space engineers. My current setup is Intel 4460@3.2, 8gb ram, gtx 960 and the AOCG2460PF 24 inch 144 Hz monitor. i have around 200 pounds for improvements. is the rx580 overkill or will it fit my system nicely or should i get a smaller 480 and upgrade my ram to 16gb?