The MB supports up to DDR3 2400. However, look at page 2.-6 of the manual ... " Due to Intel CPU behavior DDR3 2200/2000/1800 MHz memory modules will run at DDR3 2133,1866/1600 as default."
It may be you can manually make them run at their real freq but if you select DDR3 1800 in BIOS it says it will run as 1600. Since the MB supports 2400 and that isn't shown on page 2-6 maybe that will run at speed.
You're better off watercooling and running the CPU at 4.5G like Al is doing. I doubt you can get away with air cooling at that freq. Then again, I never tried it