Neptune™ Data Center & GPU Liquid Cooling Technologies

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Lenovo Neptune logo

New 6th-Gen Lenovo Neptune™ Liquid Cooling Powers the Era of AI

Boost AI and HPC performance with Lenovo Neptune™ Liquid Cooling. With over a decade of liquid-cooling expertise and more than 40 patents, we leverage our experience in large-scale supercomputing and AI to help organizations deploy high-performance AI at any scale.

Learn more about how Lenovo is bringing you faster, easier and more powerful Al.


New high-performance applications using AI technology require more system power than ever, increasing energy demands. Lenovo 6th Generation Neptune™ Liquid Cooling tackles this problem by using liquid to remove heat, which is much more efficient than traditional air cooling and provides maximum performance while dramatically improving energy efficiency.

For customers who need maximum AI and HPC performance but don’t have liquid cooling infrastructure, we partner with leading colocation companies to offer Neptune™-ready infrastructure for private AI workloads.

Lenovo Neptune™ Liquid Cooling is HPCwire’s Best HPC Server Product or Technology for 2023, one of HPCwire’s Top 5 New Products or Technologies to Watch in 2023, CRN’s 2024 Best Green Energy Product of the Year, winner of the 2024 SEAL Sustainable Product Award.

Neptune's holistic approach to liquid cooling goes beyond simply cooling the CPUs. It includes:

  • Direct warm water cooling of entire systems for maximum performance and efficiency, turning waste heat into value by allowing hot water reuse in the facility
  • Direct water cooling of individual system components, available throughout our mainstream ThinkSystem portfolio
  • Liquid-assisted cooling for the benefits of liquid in an air-cooled system
  • Rack-level rear door water cooling
  • Energy Aware Runtime (EAR) and XClarity Energy Manager software to optimize performance and power

Lenovo Tech World 2023: Wall of Neptune™

Check out our Neptune™ Liquid Cooling demo from Lenovo Tech World, where we showed how our cooling technology helps keep even the hardest working AI servers cool.

Why choose Lenovo for liquid cooling technology?

Neptune™ enables performance without compromise.

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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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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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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.

“Moving from air cooling to Lenovo Neptune™ liquid cooling, our cluster delivers four-times greater performance than our previous infrastructure within the same physical footprint, increasing our processing power so we can run cutting-edge research faster.”

- Scott Yockel, University Research Computing Officer, Harvard University


Meet Lenovo’s Neptune cooling technologies

Direct water cooling

Direct water 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

Liquid-assisted 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.
Rack water cooling

Rack water cooling

Keep heat down in the rack with either a rear-door heat exchanger (RDHX) or in-rack cooling distribution units (CDU).
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.


Customer success stories



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