well i put manually 3200mhz. voltage was like 1.44 in auto. i became astonish. so put it in 2666mhz . well if i run at max clock(3200) is there problem happen for ram lifetime or though my 2 stick is in different latency at 3200mhz(36 and 38). at 2400MHz its (36,36) both same. so what u say...what mhz should i use. @HoneyBadger84