X399 OC Guide | Page 8

4b. More Difficult Way Sometimes XMP doesn't have the desired effect or you may want to go beyond RAM's specifications so a manual tuning process is required here. AMD’s new processors support system memory multipliers (memory frequencies) up to 4000MHz. Select the frequency that your memory sticks run at. Since X.M.P. is not enabled, your memory timings will be automatically set by the CPU. Next, go back to “M.I.T.” and select “Advanced Voltage Settings”. Set your DRAM Voltage to your specific memory modules recommended voltage setting. Now that