User Manual

55931 Rev. 1.20 February 2018

AMD Ryzen™ Master Overclocking User’s Guide

AMD Ryzen™ Master Application

• Changes to Memory Access Mode must be Applied to take effect.

• This feature is inactive for Ryzen processors that do not support the feature.

d. Legacy Compatibility mode provides a control that may stabilize older games and

applications not designed with many cores in mind. Some legacy games fail to launch

when presented with >20 logical cores. Other may be not optimally schedule cores and

memory.

When turned on with Ryzen or Ryzen Threadripper processors offering >4 physical

processors, Legacy Compatibility Mode reduces the active logical processor resources by

half. With Ryzen Threadripper processors, the Memory Access Mode is also automatically

set to Local mode for further optimization. Ryzen processors function only in Local Mode.

When turned off, Legacy Compatibility Mode does not change the state of the Memory

Access Mode; the user must decide whether to change that setting. Changes to the Legacy

Compatibility Mode must be Applied in the profile to take effect.

Figure 5. System Restart Pop-up Message

The application of some controls requires a system restart, noted when Figure 5 appears.

Click “OK” to restart the system or “Cancel” if you do not wish to Apply the changes

immediately.

Once the system has restarted back to the Operating System, AMD Ryzen Master is

automatically launched. It is important to give the OS and AMD Ryzen Master a few

moments to initialize after this step. Do not open AMD Ryzen Master manually or you will

get the message that another instance of AMD Ryzen Master is already running, either the

automatic one or the one you opened, and the second instance cannot start.