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10 Nov 2022
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Performance without compromise

IT infrastructures and workloads are ever evolving creating new types of workloads. You need a server which can handle workloads of today and be agile enough to meet the challenges of tomorrow. With increased core density in the 4th Generation AMD EPYC™ processor and PCIe 5.0 memory speed, the 1U ThinkSystem SR645 V3 has the power, bandwidth, and memory to tackle virtualization, data analytics, and high performance computing.

With protection provided by Lenovo ThinkShield security and the simplified management from Lenovo’s XClarity, the SR645 V3 embodies Lenovo’s reputation for top reliability.

Designed for flexibility

Your data needs are unique to your business, and you need an infrastructure that has the flexibility to be customized. With the SR645 V3, you can choose the drive options from SAS/SATA, NVMe, and EDSFF. Configure your drives today and with a hot swappable, AnyBay™ format, quickly add or change to manage the next gen workload.

Select between PCIe 4.0 and 5.0 to meet the speed and budgetary goals for your infrastructure and select the best GPU option for your workloads. Whether it’s data analytics, virtualization or HPC, the SR645 V3 has the options for your unique requirements.

Easy Management and Secure

The ThinkSystem SR645 V3 utilizes Lenovo XClarity for an easy-to-use system management solution. XClarity enables a data-driven, centralized view of data center operations and it monitors for unexpected adds and changes.

Trust Lenovo ThinkShield to protect and defend your data center infrastructure from attacks, with a comprehensive end to end approach to security that begins with development with our Root of Trust and continues through supply chain and the full life cycle of the server.

Lenovo’s portfolio of services also supports the full lifecycle of your Lenovo IT assets - from planning, deployment and support to asset recovery.


Product Name(s) ThinkSystem SR645 V3
Form Factor 1U rack server
Processors Up to 2x 4th Generation AMD EPYC™ Processors
Memory Up to 24x TruDDR5 memory slots
Maximum 6TB with support for 3DS RDIMMs; up to 1DPC at 4800MHz
Drive Bays Up to 4x 3.5”, 12x 2.5” drives, or 16x EDSFF drives
Expansion Slots Up to 3x PCIe 4.0, 2x PCIe 5.0 slots
1x OCP 3.0 adapter slot
GPU Up to 4x single-width GPUs
Network Interface OCP 3.0 mezz adapter, PCIe adapters
Power Dual Redundant AC & DC Supplies with Titanium/Platinum for ErP Lot9 Compliance
Ports Front: 1x USB 3.1 G1, 1x USB 2.0 with XCC connection for mobile device, 1x VGA (optional), Optional external Diagnostic Port
Rear: 3x USB 3.1 G1, 1x VGA Port, 1x Serial port (optional), System ID LED, Error LED, NMI Button
Systems Management Lenovo XClarity Controller
OS Support Microsoft Windows Server, SUSE Linux Enterprise Server, Red Hat Enterprise Linux, VMware ESXi
Limited Warranty 1- and 3-year customer replaceable unit and onsite services, 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 SR645 V3, contact your Lenovo representative or Business Partner or visit For detailed specifications, consult the SR645 V3 product guide.

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

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© 2024 Lenovo. All rights reserved.
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 DS0147, published November 10, 2022. For the latest version, go to

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