post #11 of 11
For DDR3-2133, you may need to boost CPU-NB Voltage +0.05V-+0.1V to stabilize the memory controller.

If you do not OC the CPU or CPU/NB Frequency, DDR3-1866 9-10-9-28 1.550V or lower timings may be best. Or you can try raising DRAM frequency until 9-10-9-28 can not work. That will probably be your best setting without stressing CPU memory controller.