I cant speak on terms of overclocking because the only other DDR3 G.Skill set ive played with is a 1333 Ripjaw set that was 1.5v. At 1.7v they where able to make 1800+ but with timings of 9s and was kinda unstable. Each person i know personally with Ripjaw sets have different luck with each so its a toss up of how far either set can OC. Another reason why i suggest faster RAM kits is that of OCing. Im stuck at 4.2ghz on turbo mode because i cant change the RAM divider on my board nor can i go over 2000mhz on this board. Not that 4.2ghz is anything to snub at, i just know personally this chip can do 4.4+ if i wasnt held back. If your unlucky like me and cant run a RAM divider it will hamper CPU OCing.