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Thermal rules

This topic provides thermal rules for the server.

Air-cooled configuration

  • Configuration with performance fans

    • Supports DW GPU adapters up to 400W.
    • Supports SW GPU adapters up to 150W.
    • Supports RDIMM with capacity up to 128 GB per module.
    • See the following table for ambient temperature management details.
Table 1. Configuration with performance fans
CPU TDPRequired heatsinkAmbient temperature management
CPU TDP > 300W
Note
Performance heatsink
  • Keep ambient temperature to 30°C or lower when RDIMM capacity is 64 GB or less per module.
  • Keep ambient temperature to 25°C or lower when RDIMM capacity is 128 GB or less per module.
CPU TDP ≤ 300WStandard heatsink
  • Keep ambient temperature to 35°C or lower when the following conditions are met:
    • RDIMM capacity is 64 GB or less per module.
    • GPU adapters in front riser assemblies are of one of the following type:
      • DW GPU adapters lower than 300W
      • SW GPU adapters lower than 150W
  • Keep ambient temperature to 30°C or lower when RDIMM capacity is 96 GB or less per module.
  • Keep ambient temperature to 25°C or lower when RDIMM capacity is 128 GB or less per module.
  • Configuration with ultra fans

    For GPU adapters ≥ 300W, both of the following ultra fan options are supported:
    • ThinkSystem 2U 6056 24K Ultra Fan Module for 600W PCIe Adapter
    • ThinkSystem SR650/a V4 Ultra Fan Module Option Kit
    For GPU adapters < 300W, only the ThinkSystem SR650/a V4 Ultra Fan Module Option Kit is supported.
    • Supports DW GPU adapters up to 400W.
    • Supports SW GPU adapters up to 150W.
    • Supports RDIMM with capacity up to 256 GB per module.
    • Supports MRDIMM.
    • Supports ThinkSystem NVIDIA BlueField-3 B3220 VPI QSFP112 2P 200G PCIe Gen5 x16 Adapter in the following configuration:
      • CPU TDP ≤ 350W
      • Up to four GPU adapters (GPU adapter ≤ 400W is supported)
      • Slot priority of installing BlueField-3 B3220 Adapter: Slot 4 > 7 > 3 > 6
    • See the following table for ambient temperature management details.
Table 2. Configuration with ultra fans
CPU TDPRequired heatsinkAmbient temperature management
CPU TDP > 300W
Note
6732P processor is not supported.
Performance heatsink
  • Keep ambient temperature to 35°C or lower when RDIMM capacity is 64 GB or less per module.
  • Keep ambient temperature to 30°C or lower when one of the following components is installed:
    • 6725P processor
    • RDIMM with capacity 128 GB or less per module
    • ThinkSystem Cornelis CN5000 QSFP112 1port OPA Adapter
  • Keep ambient temperature to 25°C or lower when one of the following components is installed:
    • RDIMM with capacity 256 GB or less per module
    • MRDIMM
    • ThinkSystem NVIDIA BlueField-3 B3220 VPI QSFP112 2P 200G PCIe Gen5 x16 Adapter
CPU TDP ≤ 300WStandard heatsink
  • Keep ambient temperature to 35°C or lower when RDIMM capacity is 96 GB or less per module.
  • Keep ambient temperature to 30°C or lower when one of the following components is installed:
    • RDIMM with capacity 128 GB or less per module
    • ThinkSystem Cornelis CN5000 QSFP112 1port OPA Adapter
  • Keep ambient temperature to 25°C or lower when one of the following components is installed:
    • RDIMM with capacity 256 GB or less per module
    • MRDIMM
    • ThinkSystem NVIDIA BlueField-3 B3220 VPI QSFP112 2P 200G PCIe Gen5 x16 Adapter

Air-cooled configuration supporting H200 GPU adapter

  • Supports up to two ThinkSystem NVIDIA H200 NVL 141GB PCIe GPU Gen5 Passive GPU adapters installed in Slot 21 and Slot 23 of PCIe riser assembly 7.
  • Supports RDIMM with capacity up to 256 GB per module.
  • Supports MRDIMM.
  • 6732P processor is not supported.
  • The following components are required in this configuration:
    • CPU TDP ≤ 250W: Standard heatsink
    • CPU TDP > 250W: Performance heatsink
    • ThinkSystem 2U Front Double Width Air Duct for 600w
    • ThinkSystem 2U 6056 24K Ultra Fan Module for 600W PCIe Adapter
  • Keep ambient temperature to 30°C or lower.
  • Keep ambient temperature to 25°C or lower when ThinkSystem NVIDIA BlueField-3 B3220 VPI QSFP112 2P 200G PCIe Gen5 x16 Adapter is installed.
    Note
    Slot priority of installing BlueField-3 B3220 Adapter: Slot 4 > 7 > 3 > 6

Air-cooled configuration supporting RTX PRO 6000 Blackwell GPU adapter

  • Supports up to two ThinkSystem NVIDIA RTX PRO 6000 Blackwell Server Edition 96GB PCIe Gen5 Passive GPU adapters installed in Slot 21 and Slot 23 of PCIe riser assembly 7.
  • 6732P processor is not supported.
  • The following components are required in this configuration:
    • ThinkSystem 2U Front Double Width Air Duct for 600w
    • ThinkSystem 2U 6056 24K Ultra Fan Module for 600W PCIe Adapter
  • Keep ambient temperature to 25°C or lower.
  • See the following table for details of configurations with different air baffles.
Air baffleRequired heatsinkMemory moduleThinkSystem NVIDIA BlueField-3 B3220 VPI QSFP112 2P 200G PCIe Gen5 x16 Adapter
Standard air baffle
  • CPU TDP ≤ 250W: Standard heatsink
  • CPU TDP > 250W: Performance heatsink
  • Supports RDIMM with capacity up to 256 GB per module.
  • Supports MRDIMM.
N/A
GPU air bafflePerformance heatsinkSupports RDIMM with capacity up to 128 GB per module.Supported
Note
Slot priority of installing BlueField-3 B3220 Adapter: Slot 4 > 7 > 3 > 6

Air-cooled configuration supporting RTX PRO 6000 Blackwell GPU adapter (450W power limit)

  • Supports up to four ThinkSystem NVIDIA RTX PRO 6000 Blackwell Server Edition 96GB PCIe Gen5 Passive GPU adapters (limited to 450W) installed in Slot 17, 19, 21, and 23.
  • 6732P processor is not supported.
  • ThinkSystem SR650/a V4 Ultra Fan Module Option Kit is required in this configuration.
  • Keep ambient temperature to 25°C or lower.
  • See the following table for details of configurations with different air baffles.
Air baffleRequired heatsinkMemory moduleThinkSystem NVIDIA BlueField-3 B3220 VPI QSFP112 2P 200G PCIe Gen5 x16 Adapter
Standard air baffle
  • CPU TDP ≤ 250W: Standard heatsink
  • CPU TDP > 250W: Performance heatsink
  • Supports RDIMM with capacity up to 256 GB per module.
  • Supports MRDIMM.
N/A
GPU air bafflePerformance heatsinkSupports RDIMM with capacity up to 128 GB per module.Supported
Note
Slot priority of installing BlueField-3 B3220 Adapter: Slot 4 > 7 > 3 > 6

Liquid-cooled configuration with Processor Neptune® Core Module

See Water requirements for water inlet temperature and other requirements.

  • Configuration with performance fans

    • Supports DW GPU adapters up to 400W.
    • Supports SW GPU adapters up to 150W.
    • Supports RDIMM with capacity up to 128 GB per module.
    • Ambient temperature management:
      • Keep ambient temperature to 35°C or lower when RDIMM capacity is 96 GB or less per module.
      • Keep ambient temperature to 30°C or lower when RDIMM capacity is 128 GB or less per module.
  • Configuration with ultra fans

    • Supports DW GPU adapters up to 400W.
    • Supports SW GPU adapters up to 150W.
    • Supports RDIMM with capacity up to 256 GB per module.
    • Supports MRDIMM.
    • Ambient temperature management:
      • Keep ambient temperature to 35°C or lower when RDIMM capacity is 128 GB or less per module.
      • Keep ambient temperature to 30°C or lower when one of the following components is installed:
        • RDIMM with capacity 256 GB or less per module
        • MRDIMM
        • ThinkSystem NVIDIA BlueField-3 B3220 VPI QSFP112 2P 200G PCIe Gen5 x16 Adapter with direct attach cable (DAC)
      • Keep ambient temperature to 25°C or lower when ThinkSystem NVIDIA BlueField-3 B3220 VPI QSFP112 2P 200G PCIe Gen5 x16 Adapter with active optical cable (AOC) is installed.
      Note
      Slot priority of installing BlueField-3 B3220 Adapter: Slot 4 > 7 > 3 > 6 > 5

Liquid-cooled configuration with Processor Neptune® Core Module supporting front high watts GPU (up to 600W)

  • Keep ambient temperature to 30°C or lower.
  • The following components are required in this configuration:
    • ThinkSystem 2U Front Double Width Air Duct for 600w
    • Ultra fans
  • Supports RDIMM with capacity up to 256 GB per module.
  • Supports MRDIMM.
  • Supports ThinkSystem NVIDIA BlueField-3 B3220 VPI QSFP112 2P 200G PCIe Gen5 x16 Adapter .
    • Keep ambient temperature to 30°C or lower when BlueField-3 B3220 Adapter is with direct attach cable (DAC).
    • Keep ambient temperature to 25°C or lower when BlueField-3 B3220 Adapter is with active optical cable (AOC).
    Note
    Slot priority of installing BlueField-3 B3220 Adapter: Slot 4 > 7 > 3 > 6 > 5
  • See the following table for details of configurations with different GPU adapters.
GPU adapterMaximum quantityPCIe slot prioritiesAmbient temperature
ThinkSystem NVIDIA H200 NVL 141GB PCIe GPU Gen5 Passive GPU221, 23≤ 30°C
ThinkSystem NVIDIA RTX PRO 6000 Blackwell Server Edition 96GB PCIe Gen5 Passive GPU221, 23≤ 25°C
ThinkSystem NVIDIA RTX PRO 6000 Blackwell Server Edition 96GB PCIe Gen5 Passive GPU (450W power limit)417, 21, 19, 23≤ 25°C