Lenovo ThinkSystem SC777 V4 Neptune Server

The Lenovo ThinkSystem SC777 V4 Neptune Server is the first system in the supercomputing class powered by the NVIDIA GB200 NVL4 Grace Blackwell Superchip. It features 2x NVIDIA Grace processors and 4x NVIDIA Blackwell GPUs in one vertical 21” compute tray. Each processor supports 72 Arm Neoverse V2 cores. Scaling from a compact 13U enclosure, each N1380 Neptune enclosure can house 8x SC777 V4 trays. Up to 3x N1380 enclosures can be housed in a standard 19” rack cabinet.

Overview

Lenovo ThinkSystem SC777 V4 Neptune Server - System Overview

Additional Information

ThinkSystem SC777 V4 Neptune Server water cooling

On the front of the chassis, there are 6x water-cooled PCIe Gen5 adapter slots. Just behind these slots, Administrators will find 5x water-cooled drive cages, each with 2x E3.S 1T drives for up to 10x E3.S NVMe SSDs per tray. The Lenovo ThinkSystem SC777 V4 Server utilizes direct water cooling to remove heat from all components such as CPUs, memory, I/O, local storage, and voltage regulators. The SC777 V4 Server is designed for high-performance computing environments including grid deployments, technical computing, and analytics workloads in various fields such as research, life sciences, energy, engineering, and financial simulation.

Lenovo SC777 V4 in N1380 Neptune enclosure

The 13U enclosure has 4x 15kW power conversion stations (PCS), and built-in Neptune water flow distribution manifolds. A cooling Distribution Unit (CDU) can be positioned in the rack or externally. The Supercomputer infrastructure is engineered for ExaScale to EveryScale, promising a decade of top-tier performance for compute clusters of all sizes. The N1380 Enclosure has a System Management Module (SMM) on the back. Lenovo’s SC777 V4 Neptune comes with XClarity Controller 3 (XCC3), which helps manage the system easily and efficiently. It features advanced energy monitoring and management capabilities and a user-friendly interface, simplifying the management of complex HPC environments.

Specifications

Lenovo ThinkSystem SC777 V4 Neptune Server - Specifications

Form Factor

NVIDIA GB200 base system
2x Grace processors and 4x Blackwell GPUs in one vertical 21” compute tray, 8x trays per Enclosure (N1380)

Chassis

8x compute trays per 13U Enclosure (N1380) for 19’’ rack cabinets, up to 3x enclosures per rack

Processors

2x Grace processors, 72x Arm Neoverse V2 cores each processor

CPU Memory/Bandwidth

Up to 480GB LPDDR5X / Up to 512GB/s each processor

GPU Memory/Bandwidth

Up to 384GB HBM3e / Up to 16TB/s each GPU

I/O Expansion

Support up to 6x NVIDIA NDR or 3x XDR LP InfiniBand Adapters

Internal Storage

Up to 10x E3.S NVMe SSDs per tray

RAID Support

OS level RAID

Network Interfaces

2x 25GbE SFP28 LOM (1Gb, 10Gb or 25Gb capable; supports NC-SI)

Systems Management

1x DC-SCM with XClarity Controller (XCC) 3 based on OpenBMC with support for TPM 2.0
1x System Management Module (SMM) 3

Front Access

All adapters are accessible from the front of the server.

Network Interfaces
Power Button
USB-C DisplayPort
External Diagnostics Handset port
2x USB 3.0
1x VGA
1x RJ45
Location-, Error- and RoT-LEDs

Rear Access

Water Connection
Power and System Management Module (SMM3)
2x RJ45 on the SMM for XCC with daisy chain support
USB Type A for SMM FFDC log collection

Power Supply

Up to 4x HS 15kW Titanium Power Conversion Stations (PCS) with fully balanced phases, N+1 redundancy
32A 380-480V – or two PCS sharing a 63A 380-480V
3-Phase IEC 60309 3P+N+E IP67 connection to Data center power

Cooling Design

Direct Water Cooling at the heat source with treated clean water supporting inlet temperature from dew point to up to 45°C

Documentation

Lenovo ThinkSystem SC777 V4 Neptune Server - Documentation

Lenovo ThinkSystem SC777 V4 Neptune Server Data Sheet