I was thinking of old gen i5 (ddr3 systems) for gaming (PUBG, CSGO, Dota 2, etc.), would any i5 from 2nd gen to the latest 4th gen handle this game? And would it bottleneck my GTX 1050 in any way? I currently have a 1x8 ram stick. Was either planning on replacing it for a 2x4 or should I just get another 8gb stick and make it 16gb?