ThinkSystem SR645 V3 Rack Server
Versatile 1U for complex workloads
A versatile 2S/1U rack server engineered to handle complex workloads with ease.
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Performance Without Compromise
You need a server that can handle the modern workloads of today and be agile enough to meet the challenges of tomorrow. With increased core density in the 5th Generation AMD EPYC™ processor andlighting-fast memory speed, the 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 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 is easily scaleable.
With the SR645 V3, you can choose the drive options from SAS/SATA, NVMe, and EDSFF in a hot swappable AnyBay™ format for quick customization. You can also choose 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.

Easy Management and Secure
The ThinkSystem SR645 V3 uses Lenovo XClarity for an easy-to-use system management solution. XClarity enables a data-driven, centralized view of data center operations and monitors for unexpected adds and changes.
ThinkShield security Root of Trust provides security that begins during the design phase and follows the SR645 V3 throughout its entire life cycle.
Tech Specs
Form Factor/Height | 1U rack server |
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Processors | Up to 2x 4th or 5th Generation AMD EPYC™ Processors |
Memory |
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Drive Bays |
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Expansion Slots |
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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 (ErP Lot 9 Compliant) |
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 Front:
Rear:
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Systems Management | Lenovo XClarity Controller |
OS Support |
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Limited Warranty | 1 & 3-year customer replaceable unit and onsite services next business day 9x5 optional service upgrades |
Datasheet |
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