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Technical specifications

Summary of the technical specifications of the solution. Depending on the model, some features might not be available, or some specifications might not apply.

Note

  • Up to eight SC777 V4 trays can be installed in an N1380 13U enclosure.

  • Each SC777 V4 tray contains two GB200-NVL4 boards

Processor

  • The tray is installed with two GB200-NVL4 boards. Each GB200-NVL4 board contains one NVIDIA® Grace processor. The tray is installed with two NVIDIA® Grace processors in total.

    • 144 Arm® Neoverse V2 cores, base speeds up to 3.9 GHz, and TDP ratings up to 500W

    • Thirty-two channels per processor

    • Interconnect

      • NVLink: 1.8TB/s

      • NVLink-C2C: 2x 900GB/s

      • PCIe Gen5: 2x 256GB/s

Note
  1. Use the Setup Utility to determine the type and speed of the processors in the node.
  2. For a list of supported processors, see Lenovo ServerProven website.
Memory
The tray is installed with two GB200-NVL4 boards. Each GB200-NVL4 board contains 480 GB LPDDR5X on-board memory. The tray is installed with 960 GB memory in total.

  • Memory type: LPDDR5X On Board memory

  • Memory capacity: 480 GB per processor, 960 GB per tray.

  • Bandwidth: up to 384 GB/s

  • Memory clock per CPU: 4266MT/s

  • Protection:

    • ECC

Important

  • The tray only supports a fully populated processor and memory configuration.

  • Mixing DIMM speed is not supported.

  • ADDDC is not supported for 9x4 ECC DIMM (Value).

Graphics processing unit (GPU)

The tray is installed with two GB200-NVL4 boards. Each GB200-NVL4 board contains two NVIDIA® Blackwell GPUs. The tray contains four NVIDIA® Blackwell GPUs in total.

  • Supports four NVIDIA® Blackwell GPUs from two GB200-NVL4 boards

  • GPU memory type: HBM3e

  • GPU memory capacity:

    • 186 GB per GPU

    • 372 GB per GB200-NVL4 board

    • 744 GB per tray

  • GPU memory bandwidth within the GB200-NVL4 board

    • 8 TB/s between two GPUs on the GB200-NVL4 board

    • 16 TB/s between two GB200-NVL4 boards

Storage

  • Supports E3.S 1T NVMe solid-state (SSD) drives.

  • Up to ten E3.S 1T NVMe SSD drives

Note

In MCIO breakout board configuration, PCIe adapters and E3.S drives* use the same connectors on the GB200-NVL4 board. This means that the number of PCIe adapters and E3.S drives* is limited by the connectors on the GB200-NVL4 board.

*E3.S drive 2/3, 4/5, 6/7, and 8/9.

Expansion slots

Up to six PCIe adapters

Note

In MCIO breakout board configuration, PCIe adapters and E3.S drives* use the same connectors on the GB200-NVL4 board. This means that the number of PCIe adapters and E3.S drives* is limited by the connectors on the GB200-NVL4 board.

*E3.S drive 2/3, 4/5, 6/7, and 8/9.

Integrated functions and I/O connectors
Integrated functions

  • System I/O board (DCSCM)

  • Lenovo XClarity Controller (XCC), which provides service processor control and monitoring functions, video controller, and remote keyboard, video, mouse, and remote drive capabilities.

  • The server supports Lenovo XClarity Controller 3 (XCC3). For additional information about Lenovo XClarity Controller 3 (XCC3), refer to https://pubs.lenovo.com/lxcc-overview.

I/O connectors

  • Enclosure rear connectors: two Ethernet ports on the System Management Module 3 (SMM3) installed in the rear of the enclosure.

    Note
    It is recommended to use SMM3 Ethernet port as the default dedicated management network. If required to use node front Ethernet port as dedicated management network, refer to XCC user guide for network configuration instructions.

  • One Gigabit Ethernet port with RJ45 connector (Dedicated XCC management connector)

  • Two 25Gb SFP28 ports, Port 1 and Port 2. 25Gb SFP28 Port 1 is shared between the operating system and the Lenovo XClarity Controller.

    Note
    Lenovo XClarity Controller connection is mutually exclusive between RJ45 Ethernet connector and 25Gb SFP28 Port 1.

  • One USB 3.1 Gen 1 (5 Gbps) connector

  • VGA connector

  • USB 2.0 / USB 3.0 / DisplayPort Alternate Mode Type-C connector

  • External diagnostics handset connector

Video controller (integrated into Lenovo XClarity Controller)

  • ASPEED

  • SVGA compatible video controller

  • Avocent Digital Video Compression

  • Video memory is not expandable

Note
Maximum video resolution is 1920 x 1200 at 60 Hz.
Electrical input
SC777 V4 tray installed in N1380 enclosure:

  • Supports up to four 15000W Power Conversion Stations (PCS)

  • The enclosure must be installed with at least three PCS.

  • Input voltage: 380 – 480 Vac (Acbel DWC PCS)

  • Redundancy: work as N+1 with OVS and N+N with OVS (OVS, oversubscription)

  • Resetting SMM3 to factory defaults will cause the PCS redundancy mode to return to the default N+1 mode. If necessary, reconfigure the PCS redundancy mode in SMM3 to its original setting or to the setting required by the current load.

CAUTION

Power Conversion Stations and redundant Power Conversion Stations in the enclosure must be of the same brand, power rating, wattage, and efficiency level.

Mixing PCS manufactured by different vendors is not supported.

Note
Refer to SMM3 User Guide for more details of solution power status.
Minimal configuration for debugging
SC777 V4 tray installed in N1380 enclosure:

  • One N1380 enclosure

  • One SC777 V4 tray

  • Two GB200-NVL4 boards

  • Three 15000W Power Conversion Stations (PCS)

  • One drive (any type) (If OS is needed for debugging)

Operating systems
Supported and certified operating systems:

  • Ubuntu Server

  • Red Hat Enterprise Linux

  • SUSE Linux Enterprise Server

References: