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Supermicro GPU SuperServer 221GL-NHIR - System Overview

Supermicro GPU SuperServer 221GL-NHIR front

With a maximum processor TDP of 300W under air cooling, the Supermicro GPU 221GL-NHIR provides a high-speed interconnect between both GH200 Superchips via NVIDIA BlueField-3 or ConnectX-7 for large-scale AI workloads. The system supports up to 12TB of coherent memory, including 960GB of LPDDR5X and 288GB of HBM3e, enabling seamless handling of memory-intensive LLM applications. For storage, this platform accommodates 8x hot-swap E1.S NVMe drive bays, with 3x fixed front drives, and includes 2x M.2 NVMe slots for OS boot drives. Expansion capabilities include 4x PCIe 5.0 x16 slots: 3x with x16 signals and 1x with an x4 signal, which are accessible through the rear of the chassis.

Supermicro GPU SuperServer 221GL-NHIR rear

System management is provided through a dedicated RJ45 1GbE IPMI LAN port, with monitoring options available via Supermicro SuperDoctor 5 (SD5). This tool offers both command-line and web-based interfaces for Windows and Linux environments, with real-time monitoring of CPU temperature, power consumption, system voltages, and fan speed. Users can receive automated alerts via email or SNMP in case of an error. This server is powered by 4x 2000W redundant (2+2) Titanium-level hot-plug PSUs.

*This product can only be sold with a minimum of 2x GH200s, 1x HDD/M.2 storage device, and 1x NIC per system.

Supermicro GPU SuperServer 221GL-NHIR - Specifications

Processor

  • NVIDIA 72-core NVIDIA Grace CPU on GH200 Grace Hopper Superchip
  • Supports up to 300W TDP CPUs (Air Cooled)

Motherboard

  • Super G2DMH-GI

Memory

  • Slot Count: Onboard Memory
  • Max Memory: Up to 960GB ECC LPDDR5X
  • Additional GPU Memory: Up to 288GB ECC HBM3e

GPUs

Max GPU Count:

  • 2x onboard GPUs

Supported GPU:

  • NVIDIA: H100 Tensor Core GPU on GH200 Grace Hopper Superchip (Air-cooled)

CPU-GPU Interconnect:

  • NVLink-C2C

GPU-GPU Interconnect:

  • NVIDIA NVLink

Drive Bays

Default: Total 3 bays

  • 3x front fixed E1.S NVMe drive bays

M.2:

  • 2x M.2 NVMe slots (M-key)

Expansion Slots

Default:

  • 3x PCIe 5.0 x16 (in x16) FHFL slots
  • 1x PCIe 5.0 x4 (in x16) FHFL slot

On-Board Devices

Chipset:

  • System on Chip

System Cooling

  • Up to 6 Removable heavy-duty 6cm fans

Power Supply

  • 4x 2000W redundant (2 + 2) Titanium level (96%) power supplies

Chassis

Enclosure: 2U Rackmount
Height: 3.43" (87 mm)
Width: 17.3" (438.4 mm)
Depth: 35.43" (900 mm)
Gross Weight: 103 lbs (46.8 kg)
Net Weight: 88 lbs (40 kg)

Supermicro GPU SuperServer 221GL-NHIR - Documentation

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