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Lenovo

Lenovo SR635 | ThinkSystem 1U Rack Server, AMD EPYC 7002/7003, 16 DIMM DDR4

SR635

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Description

The Lenovo ThinkSystem SR635 is a high-performance single-socket 1U rack server powered by AMD EPYC 7002 or 7003 Series processors with up to 64 cores and 128 PCIe 4.0 lanes. Designed for virtualization, software-defined storage, and compute-intensive workloads, it supports up to 2TB DDR4-3200 memory, up to 16x 2.5-inch hot-swap drives including NVMe, three PCIe 4.0 expansion slots, OCP 3.0 networking, and hot-swap redundant power supplies. Managed via Lenovo XClarity Controller, this server delivers exceptional density and performance for data centers.

Features

Single-socket AMD EPYC 7002/7003 Series processor support with up to 64 cores and 280W TDP
- 128 PCIe 4.0 lanes for extensive I/O expansion and GPU acceleration
- Up to 16x 2.5-inch NVMe drive support for low-latency, high-IOPS storage
- OCP 3.0 slot for flexible, standards-based networking with tool-less installation
- Lenovo XClarity Controller for comprehensive remote management and monitoring
- TPM 2.0 security chip and AMD Secure Boot for hardware-based security
- AMD Secure Memory Encryption (SME) and Secure Encrypted Virtualization (SEV) support
- Hot-swap redundant power supplies with 80 PLUS Platinum or Titanium efficiency
- Hot-swap fan modules for continuous operation and serviceability
- Proactive Platform Alerts for predictive failure analysis on processors, memory, storage, and thermal components
- Support for up to 3x single-width GPUs for AI inference and accelerated computing
- Energy-efficient 1.2V DDR4 memory and low-power component design
- Toolless drive installation and removal for simplified maintenance
- AES-NI support for hardware-accelerated encryption
- Multiple power and thermal operating modes for workload optimization

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

Form Factor: 1U rack-mount server
- Processor: Single-socket AMD EPYC 7002 Series (Rome) or 7003 Series (Milan), up to 64 cores
- Memory: Up to 16x DDR4 RDIMM slots, 2TB maximum capacity, 8 memory channels, speeds up to 3200 MHz (1 DIMM per channel) or 2933 MHz (2 DIMMs per channel)
- Storage: Up to 16x 2.5-inch hot-swap SAS/SATA/NVMe drives or 4x 3.5-inch hot-swap SAS/SATA drives
- Expansion: 3x PCIe Gen 4.0 slots, 1x OCP 3.0 slot for Ethernet adapter
- GPU Support: Up to 3x single-width GPUs
- Network: OCP 3.0 slot with PCIe 4.0 x16 interface for Ethernet adapters
- Management: Lenovo XClarity Controller with Redfish API support, TPM 2.0 option
- Power Supply: Dual hot-swap redundant power supplies, 80 PLUS Platinum or Titanium certified
- Dimensions: Standard 1U rack-mount form factor

FAQs

Q: What AMD processors does the SR635 support?
A: The ThinkSystem SR635 supports AMD EPYC 7002 Series (2nd Gen Rome) and EPYC 7003 Series (3rd Gen Milan) processors in a single-socket configuration, offering up to 64 cores and 128 PCIe 4.0 lanes per processor.

Q: How many drives can the SR635 accommodate?
A: The SR635 can be configured with up to 16x 2.5-inch hot-swap drives supporting SAS, SATA, or NVMe protocols, or alternatively up to 4x 3.5-inch hot-swap SAS/SATA drives. The flexible storage design supports hybrid configurations for different workload requirements.

Q: What is the maximum memory capacity?
A: The SR635 supports up to 2TB of DDR4 ECC RDIMM memory across 16 DIMM slots with 8 memory channels. Memory operates at speeds up to 3200 MHz when using 1 DIMM per channel, or up to 2933 MHz with 2 DIMMs per channel.

Q: What expansion options are available?
A: The server features 3x PCIe Gen 4.0 expansion slots, 1x dedicated OCP 3.0 slot for network adapters, and support for up to 3x single-width GPUs. The 128 PCIe 4.0 lanes from the processor enable extensive I/O flexibility for GPU acceleration, NVMe storage, and high-speed networking.

Q: What workloads is the SR635 best suited for?
A: The SR635 is optimized for virtualization, VDI, software-defined storage, OLTP databases, analytics, AI inference, and HPC applications. Its combination of high core count, large memory capacity, extensive NVMe support, and GPU options make it ideal for compute and I/O-intensive workloads in a dense 1U form factor.

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