DCX Liquid Cooling Systems has announced the second-generation Facility Distribution Unit, the FDU V2AT2, a facility-scale coolant distribution unit (CDU) designed for 45 C warm-water cooling in NVIDIA NVL72 GB200 and GB300 Blackwell and Vera Rubin architectures. DCX says the system targets hyperscale AI deployments where operators want multi-megawatt liquid cooling capacity at the data hall level and, in many deployments, chillerless heat rejection.
DCX reports that the FDU V2AT2 delivers up to 8.15 MW of heat-transfer capacity and a 550 m3/h flow rate to support 45 C warm-water operation. The company says this operating point can “eliminate the need for chillers on the heat-rejection side in many deployments,” and that the unit includes a heat exchanger with a 2 C approach temperature to support “heat reuse and low cost heat rejection.”
“As the datacenter industry transitions to AI factories, operators need cooling system that won’t be obsolete in one platform cycle,” said Maciek Szadkowski, CTO at DCX. “The FDU V2AT2 replaces multiple legacy 1.3MW CDUs and enables 45°C supply water operation. This new category of CDUs has minimum thermal loss with AT2 approach temperature, and provides multi-megawatt cooling at the hall level. That opens a clear path to NVIDIA Vera Rubin architecture and beyond while simplifying cooling loop topology and significantly reducing both CAPEX and OPEX of datacenter liquid cooling system.”
DCX positions the FDU V2AT2 as a shift from “row CDU” designs to facility-scale distribution. It says the platform is engineered to support complete data halls and facility installations for large-scale, high-density AI server racks with “high flow, high availability and sustainable 45°C temperature class operation.” DCX also says the CDU supports ASHRAE W45 and W+ warm-water classes and is designed to maintain tight control to avoid condensation.
For availability, DCX says the FDU V2AT2 is available for hyperscale and high-density AI data center projects effective immediately, with reference architectures, integration guidance, and project sizing support available upon request. The company’s broader portfolio includes direct liquid cooling and immersion cooling, plus server immersion enclosures, CDUs including “Hyperscale FDU (facility sized CDU) systems,” CPU and GPU cold plates, manifolds, hydro and immersion containers, and data hall design and implementation services.
Source: DCX Liquid Cooling Systems
