ThinkSystem SD650

ThinkSystem SD650

ThinkSystem SD650

Direct water cooling for a highly efficient data center

  • Delivers greater performance than aircooled servers
  • Provides greater rack and data center density than air-cooled servers
  • Dramatically reduces energy costs
  • Supports high-speed EDR IB and Omni Path fabrics
  • Supports standard SSDs, NVMe SSDs, and M.2 boot SSDs, for even greater storage flexibility

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Direct water cooling for a highly efficient data center

  • Features



    • Direct water cooling design removes up to 90% of server heat from the rack, keeping processors up to 20°C cooler. This enables the processors to continually run in "turbo" mode, greatly increasing system performance.
    • Uses incoming (inlet) water for cooling, reducing or eliminating the need for expensive data center evaporative chillers. This saves both equipment costs and footprint space.
    • Exiting (outlet) water can be used to heat campus buildings to reduce overall energy use, saving you even more on energy costs.

    Lenovo ThinkSystem SD650 Rear View with Connection Manifold

    Innovative design

    The Lenovo ThinkSystem SD650 dual-node tray is designed for high performance computing (HPC), large-scale cloud, and heavy simulations. It supports workloads from technical computing to grid deployments to analytics and is ideally suited for fields such as research, oil and gas, and engineering. The SD650's unique water-cooling technology provides many key benefits. Compared to other technology, the SD650's direct water cooling:

    • Reduces data center energy costs by 40%
    • Increases system performance
    • Delivers 90% heat removal efficiency*
    • Creates a quieter data center
    • Enables data center growth without adding CRACs

    *Based on Lenovo internal testing

    Lenovo ThinkSystem SD650 Rear View with Nodes

    Maximum performance and management

    Designed to run the highest core-count Intel® Xeon® Scalable Family processors, the SD650 powers through demanding HPC workloads. Because water cooling removes more heat, CPUs can run in “turbo” mode nonstop, getting up to 10% greater performance from the CPU. For even greater system performance, the SD650 uses 2667MHz DDR4 memory and supports NVMe storage, high-speed EDR InfiniBand, and Omni Path adapters.

    The SD650 is managed by Lenovo Intelligent Computing Orchestrator (LiCO), a powerful management suite with an intuitive GUI that helps to easily manage large HPC cluster resources and accelerate development of AI applications.

    LiCO works with the most common AI frameworks, including TensorFlow, Caffe and Microsoft CNTK.

    Lenovo Intelligent Computing Orchestrator (LiCO)

    Extreme density

    One 6U NeXtScale n1200 Enclosure accommodates up to 12 SD650 compute nodes. The enclosure houses up to 24 processors, 9.2TB of memory, 24 SFF SSDs or 12 SFF NVMe drives, and 24 M.2 boot drives. Each SD650 offers up to 12 more cores per U than the previous generation.*

    * Compared to Lenovo NeXtScale nx360 M5

    Lenovo ThinkSystem SD650 Compute Node Bays

    Leading energy efficiency

    The ThinkSystem SD650’s direct water-cooling design provides extreme energy efficiency. With up to 90% heat removal efficiency, the SD650 provides up to a 40% savings in data center energy expense including:

    • 25% reduction in annual air conditioning use
    • 5% energy savings by running CPUs cooler
    • 4% savings by eliminating fans in the compute nodes

    For example, a large super computing center reuses the hot water produced by direct water cooling to save an estimated 45% in electricity costs and uses it to produce chilled water.

    Lenovo ThinkSystem SD650 Water-Cooling Design
  • Tech Specs

    Tech Specs

    Form Factor
    Full-wide 1U tray (six per n1200 Enclosure)
    NeXtScale n1200 Enclosure (6U)
    2x Intel® Xeon® Scalable Processors per node; 2x nodes per 1U tray
    Up to 768GB using 12x 2667MHz TruDDR4 DIMMs per node
    I/O Expansion
    1x 50mm width ML2 slot and 1x PCIe x16 slot for EDR InfiniBand or Intel Omni Path, per server node
    Internal Storage Up to 2x 2.5” SATA SSDs (7mm height) or 1x 2.5” NVMe SSDs (15mm height) per node; optional M.2 SSD Hardware RAID adapter, supporting M.2 drives
    RAID Support Onboard SATA controller with Software RAID; optional Dual M.2 SSD adapter with Hardware RAID 1
    Network Interface 1x 1GbE BaseT NIC per node; additional high-speed network adapters (InfiniBand or Omni Path) can be installed in available front-accessible PCIe x16 adapter slot
    Power Management Rack-level power capping and management via Extreme Cloud Administration Toolkit (xCAT)
    Systems Management Remote management using Lenovo XClarity Controller; 1Gb dedicated management NIC plus 1Gb shared management NIC per node
    OS Support Red Hat, SUSE, CentOS (with LeSI support); Visit for more info.
    Limited Warranty 3-year customer replaceable unit and onsite limited warranty, next business day 9x5, service upgrades available
  • Resources

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