depends on the games
i know that my pc (no bet people are gonna come out and say im full of it ill get benchmarks when gta redownlads) can run gta at a decent frame rate
with only
8gb of ram (can use less i reckon but i run some other things in the background so i have 8 gigs soon to have 500GB)
a gt 730
and a i3 3220 (yea its old but it bloody works)
gta bench marks (avg is in yellow)
Frames Per Second (Higher is better) Min, Max, Avg
Pass 0, 11.570157, 70.384720, 24.835558
Pass 1, 15.090750, 31.994766, 25.722246
Pass 2, 15.738938, 31.793701, 26.306297
Pass 3, 14.800498, 35.102280, 25.964779
Pass 4, 3.749799, 66.626114, 28.041782
fixed up a small derp on my part