So, i built a budget rig ( 600w psu, r9 270, 1tb, fx8320e) and i was short 40euros for a 8 gigs of ram. For a month i used 2gigs of my older ram. I could not find a thread comparing 2 and 8 gigs of ram so im typing this for guys like me. Games were playable at low, but not at medium or higher ( i spent 10 days downloading patches for fallout 4 because fps drop in cities was unplayable), god forbid minimising while playing, minutes would pass before comp unfroze. I started thinking my graphic and cpu were at false, wanted to return them, Then my paycheck came, i bought 8 gigs hyper x and man...i was stunned. It was like i bought a 1500 euro rig. Everythings maxed out with 30+, mostly 40+ fps at 1080p. No issue with Fallout whatsoever. So guys. Buy 8 or more gigs if you want to do a lot of gaming. DO NOT USE LESS. Cheers.