So I have a gtx 680 with 2gb vram....It's a little less than 3 years...Should I upgrade to gtx 1060 3gb or Rx 480 4gb..I can't afford the 6gb or 8gb version....And is gtx 680 still a good option to manage with it for next 2 years so I can buy better GPU after 2 years...And should I upgrade from win 7 to windows 10??Is that good to play games ..And is tat stable now?