Dell PowerCool eRDHx reduces AI data center cooling costs

Dell Technologies has announced the PowerCool Enclosed Rear Door Heat Exchanger (eRDHx), a closed-loop warm-water liquid cooling solution designed to reduce cooling energy and increase GPU density in AI data centers.

• Product details & performance: The eRDHx is a closed-loop, warm-water system operating with facility water between 32–36°C (90–97°F), provides up to 80 kilowatts of cooling capacity per rack, claims up to 74% reduction in cooling energy, and enables up to 4x GPU density per rack; a hypothetical 1,024-server deployment at a 10MW scale is cited as yielding $18.3M in energy savings over five years.
• Availability & supporting materials: The article references availability timelines (stated as starting December 2025 in the key takeaways and becomes available in April 2026 in the body), links to a whitepaper, infographic and checklist for planning, and cites an IEA April 2025 report and Dell-authored technical references (Emily Clark, Ph.D.; Tim Shedd, Ph.D.).