Neptune™ Data Center & GPU Liquid Cooling Technologies

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Why Choose Lenovo for Liquid Cooling Technology?

Lenovo Neptune® enables performance without compromise.

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Performance

Lenovo Neptune® Liquid Cooling boosts CPU, GPU, and system speed, delivering faster results for new server workloads like AI and HPC.
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Sustainability

Meet environmental goals and align with carbon reduction initiatives without sacrificing the ability to deliver the computing power your organization needs to compete and thrive.
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Density

Lenovo Neptune® delivers more computing power in a compact footprint to support your most demanding workloads.
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Competitive Advantage

For faster time-to-market, scientific breakthroughs, or research grants, your business benefits from high-performance computing for quicker results.

Lenovo leads the industry with over 12 years of experience in liquid cooling.


Lenovo infrastructure powers 8 of the world’s top 10 public cloud providers.

Lenovo holds hundreds of patents in liquid cooling technology.

Lenovo’s new Neptune systems deliver up to 100% heat removal.

Discover Lenovo Neptune®Liquid Cooling

Overview

AI-driven, high-performance applications are pushing system power limits and driving up energy demand. Lenovo’s 6th Gen Neptune® Liquid Cooling solves this with efficient liquid-based heat removal—delivering peak performance while significantly boosting energy efficiency over traditional air cooling.

For organizations needing top-tier AI and HPC performance without existing liquid cooling, Lenovo partners with leading colocation providers to deliver Neptune®-ready infrastructure for private workloads.

Recognized with multiple awards—including HPCwire’s Best HPC Server Product 2023, CRN’s Best Green Energy Product 2024, and the SEAL Sustainable Product Award 2024—Neptune® redefines energy-smart performance.

Neptune® technology includes:

  • Neptune®: Warm water cooling of entire systems, enabling hot water reuse
  • Neptune® Core: Component-level cooling (CPUs, GPUs, memory) to reduce airflow needs
  • Neptune® Air: Liquid-assisted cooling in air-based systems
  • Rear door rack-level water cooling
  • EAR & XClarity Energy Manager for optimized power/performance

Lenovo offers workshops and design services to assess and implement direct liquid cooling tailored to your environment.

High tech, water-cooled servers

Lenovo Neptune®: Liquid Cooling Reimagined

See how 6th-Generation Lenovo Neptune® Liquid Cooling enables the most demanding AI and HPC workloads, dramatically boosting performance and driving energy savings of up to 40%.

“By switching to Lenovo Neptune® liquid cooling, our cluster delivers 4x the performance of our old setup in the same space, boosting processing power to accelerate cutting-edge research.”

- Scott Yockel, University Research Computing Officer, Harvard University

Solutions

Meet Lenovo’s Neptune cooling technologies

Direct water cooling

Neptune®: Direct Full-System Cooling

Full-system direct water cooling delivers 100% direct water cooling of the entire system, removing heat from all components –including power supplies – for completely fanless operation.
Rack water cooling

Neptune® Core: Open Loop Cooling System

Targeted at the hottest components of the system, such as CPUs, GPUs, and memory, Neptune ® Core uses open-loop direct water cooling for up to 80% heat capture with low airflow requirements.
Direct water cooling

Neptune® Air: Liquid-Assisted Cooling

With full systems and core systems available, direct water cooling removes heat from key components – including power supplies – for completely fanless operation.
Liquid-assisted cooling

Reduce Rack Heat With RDHX/CDU Cooling

With either a thermal transfer module (TTM) or liquid-to-air heat exchanger (L2A), traditional air-cooled systems benefit from liquid cooling with specially designed heat handling, without added plumbing.
Energy Aware Runtime & XClarity software

Energy Aware Runtime & XClarity software

By optimizing power states, turning off unused components, and routing workloads to the most efficient resources, our software helps deliver optimal performance at a low level of energy consumption.

Products

Front view of Lenovo ThinkSystem SR665 V3

Lenovo ThinkSystem SC750 V4 Neptune®

Empowering Exascale to Everyscale™: Your Lenovo Neptune® Supercomputer featuring the Intel® Xeon® 6 processor

Front view of Lenovo ThinkSystem SR650 V3

Lenovo ThinkSystem SC777 Neptune

The ThinkSystem SD650 V3 Neptune DWC server is the next-generation high-performance server based on the Lenovo Neptune™ direct water-cooling platform.

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Lenovo ThinkSystem N1380 Neptune Chassis

Lenovo’s next generation of Neptune liquid cooling technologies is designed to address the challenges of new high performance AI applications.

Front view of Lenovo ThinkSystem SR780a V3

Lenovo ThinkSystem SR780a V3

The ThinkSystem SR780a V3 delivers massive computational performance for AI and HPC workloads using 8 fully interconnected NVIDIA GPUs and Lenovo Neptune ® liquid cooling.

Front view of Lenovo ThinkSystem SR675 V3

Lenovo ThinkSystem SR675 V3

From single-node enterprise deployments to the largest supercomputers in the world, the SR675 V3 server can scale to meet any performance demand.

Front view of Lenovo ThinkSystem SD650 V3

Lenovo ThinkSystem SD650 V3

The ThinkSystem SD650 V3 dual-node tray contains Neptune™ cooling technology designed for technical computing, grid deployments, and analytics workloads.

Front view of Lenovo ThinkSystem SD665 V3

Lenovo ThinkSystem SD665 V3

The ThinkSystem SD665 V3 delivers maximum AMD CPU performance, extreme density, and leading energy efficiency.

Front view of Lenovo ThinkSystem SD650-I V3

Lenovo ThinkSystem SD650-I V3

This Lenovo ThinkSystem SD650-I V3 is cooled by Lenovo Neptune™ direct water-cooling technology that results in reliable performance in a dense form factor.

Front view of Lenovo ThinkSystem SD665-N V3

Lenovo ThinkSystem SD665-N V3

Bringing Exascale performance to your AI & HPC workloads, the ThinkSystem SD665-N V3 Neptune ® server delivers maximum NVIDIA GPU performance.

Customer success stories

Resources

Services

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TruScale Infrastructure Services

Lenovo TruScale is an as-a-service, cloud-like experience with on-prem security and control. It scales very easily, to give you all the power and strategic advantage of the latest data center hardware through a pay-as-you-go business model.
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Professional Services

We’ll design the best way to get you from where you are to where you want to be by manging end-to-end architecture, hardware installation, data migration, and system deployment, accelerating your time to productivity and maximizing your ROI.
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Support Services

Enjoy one-call support with Premier Support warranty upgrades and extensions. For more complex issues, a Technical Account Manager with in-depth expertise, serves as a single point of accountability for all your infrastructure services.
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Managed Services

Lenovo Managed Services helps businesses like yours, to gain better performance, limited downtime and peace of mind. With a tailored service, you control and predict your costs and improve system availability and capacity, while reducing your operating expenses.

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