The 4U16X-GNR2/ZC server, launched by ASRock Rack at this year's OCP Global Summit 2025, integrates NVIDIA's HGX B300 platform, which packs eight NVIDIA Blackwell Ultra GPUs that feature high-speed interconnects, with ZutaCore's HyperCool waterless liquid-cooling system.
Designed for artificial-intelligence (AI) factories and high-performance computing, the system uses a non-conductive dielectric fluid to wick heat from chips, eliminating the need for traditional water-based cooling. This result delivers improved thermal management, safety, and sustainability while reducing energy and operational costs.
"AI at scale requires infrastructure that not only accelerates deployment, but also drives greater energy efficiency to meet today's sustainability goals," said Weishi Sa, President of ASRock Rack. "The NVIDIA HGX B300 platform sets a new benchmark for accelerated computing, enabling transformative AI performance across industries.
He added, “With the 4U16X-GNR2/ZC, ASRock Rack is delivering the world's first platform to feature NVIDIA HGX B300 with a waterless liquid-cooling system designed for high-performance, energy-efficient AI operations. This innovation addresses critical thermal challenges while enabling data centers to scale efficiently, safely, and sustainably."
ASRock Rack is also unveiling an air-cooled 8U16X-GNR2 (also built on the NVIDIA HGX B300 platform) and the 4UXGM-GNR2 CX8, which incorporates NVIDIA RTX PRO 6000 Blackwell GPUs, ConnectX-8 SuperNICs, and BlueField-3 DPUs for AI inference and visual computing. Furthermore, the company is showcasing its 4OU12N-AM5 OCP server, powered by AMD EPYC 4005, aimed at cloud-hosting environments.
