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21 Feb 2023
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Agility with Speed

The Lenovo ThinkSystem SR635 V3 with the 4th Gen AMD EPYC™ processor delivers the ideal choice for business and infrastructure applications. With support for DDR5 memory and a 50% increase in PCIe slots, the SR635 V3 delivers twice the performance of the previous generation.

Beneficial Performance

The SR635 V3 packed with performance to provide companies with the speed and agility of a traditional 1S server in a 1U format. The 4th Generation AMD EPYC™ offers maximum processing power with up to 128 Zen 4 cores. Increasing the core density up to 50% over the previous version.

It also has increased I/O and storage speed with up to 5 PCIe Gen4 slots, or up to 2 Gen5 slots as well as supports the latest TruDDR5 memory. The SR635 V3 offers the bandwidth and storage speed for data intensive applications like AI, virtualization, and software defined storage (SDS).

Reliable, secure and easy-to-manage

With the SR635 V3 reliability, security, and management work together to maximize uptime. At Lenovo, reliability starts during manufacturing where we test and hold our servers to industry-leading standards. Security provided by Lenovo ThinkShield also begins at the factory with our Root of Trust and follows the server throughout its life.

We add to the reliability and security with Lenovo XClarity, the single license, easy system management software. XClarity makes management easy with an intuitive platform and single dashboard to view activity. It also includes security features like monitoring hardware for unexpected adds and changes.

Combine all these features and it’s no wonder ITIC named Lenovo servers #1 for reliability and uptime for 8 years in a row.


Form Factor / Depth 1U rack server 778mm (30.6 inches)
Processor One 4th Generation AMD EPYC™ Processors
Memory 12x TruDDR5 DIMM slots at 1DPC
Maximum 3TB using 256GB 3DS RDIMMs
Up to 1 DPC at 4800MHz
Drive Bays Up to 12x 2.5” hot-swap drive bays (Combinations of SAS/SATA, NVMe, or AnyBay™)
Up to 16 EDSFF
Boot Drives: Two 7mm drives at the rear; Internal M.2 module supporting up to two M.2 drives
GPU Support Up to 4x single-width GPUs
RAID Support Hardware RAID; HBAs
Power Supply Dual Redundant AC & DC supplies with Titanium/Platinum for ErP Lot9 Compliance
Network Interface OCP 3.0 mezz adapter; 1GbE Dedicated Management, optional 2nd port using OCP slot
Slots Up to 5x PCIe 4.0 slots, up to 2x PCIe 5.0 slots; Up to 64x lanes via onboard NVMe connectors
Ports Front: Front Operator Panel or Integrated diagnostic panel; 1x USB 3.1 and 1x USB 2.0 with XCC connection for mobile device Optional VGA port; External diagnostic port for optional External Diagnostic Handset
Rear: 3x USB 3.1 ports; 1x VGA port; Optional Serial (COM) port; System ID LED, Error LED, NMI button
Systems Management ThinkSystem XClarity Controller based on AST2600; Pluggable hardware root of trust (RoT) module with TPM 2.0 (Optional)
Operating Systems Microsoft Windows Server, SUSE Linux Enterprise Server, Red Hat Enterprise Linux, VMware vSphere
Limited Warranty 1- and 3-year customer replaceable unit and onsite service, next business day 9x5; optional service upgrades

About Lenovo

Lenovo (HKSE: 992) (ADR: LNVGY) is a US$62 billion revenue global technology powerhouse, ranked #171 in the Fortune Global 500, employing 77,000 people around the world, and serving millions of customers every day in 180 markets. Focused on a bold vision to deliver smarter technology for all, Lenovo is expanding into new growth areas of infrastructure, mobile, solutions and services. This transformation is building a more inclusive, trustworthy, and sustainable digital society for everyone, everywhere.

For More Information

To learn more about the Lenovo ThinkSystem SR635 V3, contact your Lenovo representative or Business Partner or visit For detailed specifications, consult the SR635 V3 Product Guide.

Learn more about Lenovo Storage
Learn more about Lenovo Services
Learn more about Lenovo TruScale

Related product families

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Availability: Offers, prices, specifications and availability may change without notice. Lenovo is not responsible for photographic or typographic errors. Warranty: For a copy of applicable warranties, write to: Lenovo Warranty Information, 1009 Think Place, Morrisville, NC, 27560. Lenovo makes no representation or warranty regarding third-party products or services.

Trademarks: Lenovo, the Lenovo logo, AnyBay®, ThinkShield®, ThinkSystem®, and XClarity® are trademarks or registered trademarks of Lenovo. Linux® is the trademark of Linus Torvalds in the U.S. and other countries. Microsoft®, Windows Server®, and Windows® are trademarks of Microsoft Corporation in the United States, other countries, or both. Other company, product, or service names may be trademarks or service marks of others.

Document number DS0149, published February 21, 2023. For the latest version, go to

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