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 TDP	Required heatsink	Ambient temperature management
CPU TDP > 300W	Performance heatsink	Keep ambient temperature to 30°C or lower when RDIMM capacity is lower than 64 GB per module. Keep ambient temperature to 25°C or lower when RDIMM capacity is lower than 128 GB per module.
CPU TDP ≤ 300W	Standard heatsink	Keep ambient temperature to 35°C or lower when the following conditions are met: RDIMM capacity is lower than 64 GB 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 lower than 96 GB per module. Keep ambient temperature to 25°C or lower when RDIMM capacity is lower than 128 GB 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.
- 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)
- See the following table for ambient temperature management details.

Table 2. Configuration with ultra fans
CPU TDP	Required heatsink	Ambient temperature management
CPU TDP > 300W	Performance heatsink	Keep ambient temperature to 35°C or lower when RDIMM capacity is lower than 64 GB per module. Keep ambient temperature to 30°C or lower when RDIMM capacity is lower than 128 GB per module. Keep ambient temperature to 25°C or lower when one of the following components is installed: RDIMM with capacity lower than 256 GB per module MRDIMM ThinkSystem NVIDIA BlueField-3 B3220 VPI QSFP112 2P 200G PCIe Gen5 x16 Adapter
CPU TDP ≤ 300W	Standard heatsink	Keep ambient temperature to 35°C or lower when RDIMM capacity is lower than 96 GB per module. Keep ambient temperature to 30°C or lower when RDIMM capacity is lower than 128 GB per module. Keep ambient temperature to 25°C or lower when one of the following components is installed: RDIMM with capacity lower than 256 GB per module MRDIMM ThinkSystem NVIDIA BlueField-3 B3220 VPI QSFP112 2P 200G PCIe Gen5 x16 Adapter

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 lower than 96 GB per module.
  - Keep ambient temperature to 30°C or lower when RDIMM capacity is lower than 128 GB 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 lower than 128 GB per module.
  - Keep ambient temperature to 30°C or lower when one of the following components is installed:
    - RDIMM with capacity lower than 256 GB per module
    - MRDIMM

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