very hard to believe 4000 on air,no offence,but you're claiming a DDR3-1600 mhz binned stick(no bin at all for Hynix MFR) just got to DDR3-4000 mhz on air.EVEN if you IMC was gold,and somehow reached on a top peltier DDR3-4000,your ram would have to be magic to go there on air alone....