Due to AMD specification, AM3+ CPU insert more than two double side memory module, memory speed will run DDR3-1333 by BIOS default setting.
It need to manually set in BIOS for support DDR3-1600 speed.
Please refer following pictures for the setting.
1. Press [Delete] key in POST screen to go to BIOS > O.N.E > OverClock Navigator > Manual OverClock.
2. Go to DRAM TIMING Configuration > MCT Timing Mode > Manual.
3. Memclock Value > DDR 1600.
4. Press F4 key to Save and Exit the BIOS.
