• Lenovo ThinkSystem SR675 V3 – 3U GPU-Dense Rack Server with AMD EPYC™ & NVIDIA HGX™

    Keywords

    Lenovo ThinkSystem SR675 V3, AMD EPYC 9004, AMD EPYC 9005, DDR5 memory, GPU rack server, NVIDIA HGX H200, Lenovo Neptune cooling, PCIe Gen 5, hybrid liquid cooling, LiCO orchestration

    Description

    The Lenovo ThinkSystem SR675 V3 delivers industry-leading GPU performance by combining up to two 5th-Generation AMD EPYC™ 9005 processors (128 cores per socket) with support for eight double-width GPUs connected via NVLink or a dedicated NVIDIA HGX™ H200 4-GPU module featuring hybrid liquid-air cooling Lenovo Documentation. With 24 DIMM sockets, the server scales to 3 TB of TruDDR5 memory at up to 6400 MHz (using 5th-Gen EPYC CPUs) or 6000 MHz (using 4th-Gen EPYC CPUs), delivering unparalleled memory bandwidth for data-intensive AI training and HPC simulationsLenovo Press.

    Storage flexibility includes up to eight hot-swap 2.5″ SAS/SATA/NVMe drives on the base module or up to six EDSFF E1.S/E3.S NVMe SSDs in the dense module, while front- or rear-mounted configurations let you optimize capacity or performance according to workload demandsLenovo Press. Six PCIe Gen 5 x16 slots plus an OCP NIC 3.0 slot enable high-speed networking and accelerator add-ons, and dual 2600 W Titanium PSUs with full N+N redundancy ensure maximum uptime and energy efficiency in mission-critical environments.

    Lenovo’s management ecosystem—XClarity Controller 2, Confluent integration, and the HPC & AI Software Stack with the LiCO Web portal—provides agent-free deployment, monitoring, and workflow automation for both AI and HPC workloads, abstracting cluster orchestration complexity and accelerating time to insight

    Key Features

    • Dual AMD EPYC™ Processors: Supports 4th/5th-Gen EPYC 9004/9005 series, up to 128 cores per socket for massive parallelism Lenovo Documentation

    • Up to 3 TB DDR5 Memory: 24× DIMMs at up to 6400 MHz (5th-Gen) or 6000 MHz (4th-Gen) for maximum bandwidth Lenovo Press

    • GPU-Dense Architecture: Base module: 4× double-width GPUs; Dense module: 8× double-width GPUs; HGX module: NVIDIA HGX H200 4× SXM5 GPUs with NVLink Lenovo Press

    • Lenovo Neptune™ Hybrid Cooling: Closed-loop liquid-to-air cooling for HGX GPUs, reducing noise and powerLenovo Press

    • Flexible Storage: Up to 8× 2.5″ hot-swap SAS/SATA/NVMe or 6× EDSFF NVMe SSDs, plus 2× 2.5″ M.2 boot SSDs (BOSS) Lenovo Press

    • 6× PCIe Gen 5 Slots + OCP NIC 3.0: High-throughput I/O expansion for networking or accelerators

    • Enterprise Management: Lenovo XClarity Controller 2, Confluent, LiCO Web portal for HPC/AI orchestration

    • Redundant Titanium PSUs: Four N+N hot-swap PSUs (up to 2600 W) and ASHRAE A2 support for energy efficiency

    Configuration

    ComponentSpecification
    Form Factor3U rack (42.8 mm × 482.4 mm × 677 – 807 mm)
    Processors1 × or 2 × AMD EPYC™ 9004/9005 Series (LGA 6096; up to 128 cores/socket; TDP up to 400 W) Lenovo Documentation
    Memory24 × DDR5 DIMM sockets (TruDDR5: 64 GB–128 GB; up to 3 TB; 6000 – 6400 MHz) Lenovo Press
    GPU OptionsBase: 4 × PCIe Gen 5 GPUs; Dense: 8 × PCIe Gen 5 GPUs; HGX: 4 × SXM5 GPUs with NVLink and Neptune cooling Lenovo Press
    StorageBase/Dense: Up to 8 × 2.5″ SAS/SATA/NVMe; Dense: up to 6 × E1.S/E3.S NVMe SSDs; HGX: up to 4 × 2.5″ NVMe; BOSS: 2 × M.2 SSDs Lenovo Press
    I/O ExpansionUp to 6 × PCIe Gen 5 x16 (2 front, 4 rear); 1 × OCP NIC 3.0 
    NetworkingFront/rear high-speed fabric options; OCP NIC 3.0 supports x16/x8/x4 configurations
    Power & Cooling4 × N+N hot-swap Titanium PSUs (up to 2600 W); ASHRAE A2; variable-speed fans; Neptune liquid hybrid on HGX module 
    ManagementLenovo XClarity Controller 2; Confluent; Lenovo HPC & AI Software Stack; LiCO Web portal

    Compatibility

    • Operating Systems: Red Hat Enterprise Linux, SUSE Linux Enterprise Server, Microsoft Windows Server, VMware ESXi, Alma Linux, Rocky Linux, Canonical Ubuntu LTS Lenovo Press

    • Accelerator Ecosystem: NVIDIA Hopper (H100/H200), Lovelace (L40), Ampere (A100), AMD Instinct™ MI Series Lenovo Press

    • Management Integrations: Microsoft System Center, VMware vCenter, BMC Truesight, Red Hat Ansible Modules, Nagios, IBM Tivoli, Micro Focus Operations Lenovo

    Usage Scenarios

    • AI Model Training & Inference: HGX H200’s 4× SXM5 GPUs with NVLink deliver scalable multi-instance GPU support (up to seven MIG partitions) for elastic data-center deployments Lenovo Press.

    • High-Performance Computing (HPC): Dual-socket AMD EPYC and 3 TB DDR5 memory accelerate large-scale simulations, genomics, and weather modeling in space-constrained racks Lenovo Documentation.

    • Visualization & Rendering: Up to eight double-width GPUs deliver real-time ray tracing and VR workloads, while Neptune cooling maintains quiet, efficient operation in development studios Lenovo Press.

    • Scalable Cluster Orchestration: LiCO Web portal and Confluent management simplify cluster provisioning, multi-user workload scheduling, and automated scaling for both AI and HPC environments.

    Frequently Asked Questions

    Q1: What is the maximum GPU density in the SR675 V3?
    A1: In the dense module, it supports up to eight double-width, full-height, full-length GPUs over a PCIe Gen 5 fabric; the HGX module supports four SXM5 GPUs interconnected via NVLink Lenovo Press.

    Q2: How does Lenovo Neptune™ hybrid cooling work?
    A2: Lenovo Neptune™ uses a closed-loop liquid-to-air heat exchanger on HGX GPUs to remove heat more efficiently than air alone, reducing PSU load, acoustic noise, and thermal hotspots Lenovo Press.

    Q3: Can I mix 4th-Gen and 5th-Gen EPYC CPUs?
    A3: No—processor generations must match per node. To achieve 6400 MHz DDR5, use only 5th-Gen EPYC CPUs; 4th-Gen CPUs operate up to 6000 MHz Lenovo Press.

    Q4: What high-speed networking options are available?
    A4: An OCP NIC 3.0 slot supports dual 10/25/100 GbE adapters, and rear fabric modules offer choice of InfiniBand, Omni-Path, or Ethernet to scale cluster interconnects Lenovo Press.

    Q5: How is system management simplified at scale?
    A5: Lenovo XClarity Controller 2 provides embedded agent-free management; Confluent integration and the LiCO portal enable 1:many orchestration, workflow templates for AI/HPC, and centralized monitoring

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