User Manual

55931 Rev. 1.0 March 2, 2017

AMD Ryzen Processor Overclocking User’s Guide

AMD Ryzen Master Application

5.1.1 Main features

AMD Ryzen Master supports the following key capabilities for AMD Ryzen processor

performance-tuning and monitoring:

 CPU core clock adjustment

o CPU clock speed slider (mouse) or via CPU clock speed text box (type in value, use mouse

scroll, use up/down keyboard keys or click the up/down button)

 CPU core voltage adjustment

o CPU VID value (type in value, use mouse scroll, use up/down keyboard keys or click the

up/down button)

 CPU SOC voltage adjustment

o VDDCR_SOC value (type in value, use mouse scroll, use up/down keyboard keys or click

the up/down button)

 CPU Core Disable

o Select 0, 2, 4 or 6 cores to disable

 Memory voltage adjustment

o MEM VDDIO (type in value, use mouse scroll, use up/down keyboard keys or click the

up/down button) and MEM VTT (type in value, use mouse scroll, use up/down keyboard

keys or click the up/down button, recommended to set for one half of MEM VDDIO)

o Note: Motherboards that do not make MEM VDDIO available to AMD Ryzen Master

through BIOS will cause AMD Ryzen Master to display 0.000V for MEM VDDIO and

MEM VTT. Memory clock and timing adjustment may still function within the scope of

the fixed memory voltage. For detailed memory over-clocking, use the motherboard’s

BIOS utility.

 Memory clock adjustment

o Memory clock horizontal speed slider (move with mouse or use mouse scroll)

o Keyboard left/right arrow keys can also be used to adjust the memory clock

 Memory timing adjustment

o Tcl, Trcdrd, Trcdwr, Tras and Trp clock cycle values from drop down menus

 Profiles support

o Up to four different profiles can be created, tested and saved for use.

o A given profile can be created to optimize core configuration and performance for a class

of applications, typically based on how many cores and threads the applications tend to

use.

o With four profiles, a system with an AMD Ryzen 7 8-core processor could configure and

optimize frequencies for 8-core, 6-core, 4-core and 2-core application classes, respectively.

Note that a system reset will be required when switching between profiles that change

enabled cores.

 Clock monitoring

o Per-core CPU clock monitoring via Histogram (including current, average and peak clock

readings)

o Current average clock speed across all enabled cores

 CPU Temperature monitoring

o CPU temperature monitoring via Histogram