Tuning UEFI Settings for Performance and Energy Efficiency on AMD Processor-Based ThinkSystem Servers

Properly configuring UEFI parameters in a server is important for achieving a desired outcome such as maximum performance or maximum energy efficiency. This paper defines preset UEFI operating modes for Lenovo® ThinkSystem™ servers running AMD EPYC 7002 and 7003 Series processors that are optimized for each of these outcomes. In addition, a thorough explanation is provided for each of the UEFI parameters so they can be fine-tuned for any particular customer deployment.

This paper is for customers and for business partners and sellers wishing to understand how to optimize UEFI parameters to achieve maximum performance or energy efficiency of Lenovo ThinkSystem servers with second-generation and third-generation AMD EPYC processors.

Introduction
Summary of operating modes
UEFI menu items for SR635 and SR655
UEFI menu items for SR645 and SR665
Hidden UEFI Items for SR645 and SR665
Low Latency and Low Jitter UEFI parameter settings
ThinkSystem server platform design
References

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Changes in the January 2023 update:

• Added a link to a Lenovo support tip on Microsoft Powercfg command-line options — “References” on page 50

Related product families

Product families related to this document are the following:

• Processors
• ThinkSystem SR635 Server
• ThinkSystem SR645 Server
• ThinkSystem SR655 Server
• ThinkSystem SR665 Server