My board supports DDR3 2133/1866/1600/1333/1066. I have a 2500K. I see all these people buying CAS 9 at 1.5v. i notice most people buy 1600 (PC12800) cuz its most common in most current systems. However i have noticed DDR3 2133 (PC3 17000) prices dropping pretty close to the 1600 (PC12800). Qustion 1: Now OC question is i notice most people tinkering with CAS and the volts to achive higher speeds (in OCing). Lets say someone buys 1600 (PC12800) CAS9 1.5v and they bump the ram to 2133 CAS 11 @ 1.65v. Would u guys agree that it was better off buying a stick of 2133 CAS 9 (PC3 17000) @ 1.5v at same price??? Question 2: using the same scenario above, my THEORY is that wouldnt it it be possible to underclock the 2133 CAS 9 (PC3 17000) @1.5v RAM down to 1600 and achieve tighter times as lets just say CAS 8 timings? Question 3: In buying 2133 CAS 9 (PC3 17000) 1.5v rated ram on a system that would normally run 1600 (PC12800), wouldn't this give me more ROOM for getting a better OC of my CPU??