Can't really give any info without knowing which cpu like DSzymborski suggested. Fx 4300, i5 650, i5 6600k? Which game, solitaire, bf1, witcher3, csgo? How many fps, is 30 enough, 50, 60, are you shooting for 120+ for a 144hz monitor? An i5 650 is 3.2ghz, an i5 6600 is 3.3ghz, one is significantly faster than the other.