Liquid-Cooled NVIDIA Servers at the ASRock Rack OCP 2026 Booth
ASRock Rack unveiled multiple liquid-cooled NVIDIA server systems at the OCP Global Summit 2026 in San Jose, including a full NVIDIA Vera Rubin NVL72 rack and HGX Rubin NVL8 servers.
At OCP Global Summit 2026 in San Jose, ASRock Rack showcased an extensive lineup of NVIDIA systems featuring advanced liquid cooling technology. The display included a complete NVIDIA Vera Rubin NVL72 rack alongside HGX Rubin NVL8 servers in both 2U and 5U configurations, two NVIDIA MGX RTX PRO servers, and a dual NVIDIA Vera CPU server. Additional highlights featured the liquid-cooled NVIDIA Spectrum-X SN6600-LD switch and the passively cooled NVIDIA RTX PRO 4500 Blackwell Server Edition GPU.
Vera Rubin NVL72 System
ASRock Rack's XGMRACK-VR/NVL72 represents their implementation of the NVIDIA Vera Rubin NVL72, a 48RU NVIDIA MGX rack equipped with a 5000A busbar and liquid manifold. The system houses 18 Vera Rubin compute trays and nine NVLink 6 switch trays, totaling 36 NVIDIA Vera CPUs and 72 NVIDIA Rubin GPUs. NVIDIA rates the full rack at 3,600 PFLOPS of NVFP4 inference (sparse) and 2,520 PFLOPS of NVFP4 training (dense), featuring 20.7TB of HBM4 memory with 288GB per Rubin GPU.
Power delivery comes from four 3RU 19" power shelves, each rated at 110kW and utilizing six 18.3kW PSUs plus bulk capacitors. ASRock Rack offers multiple cooling options including in-rack, in-row, RDHx, or liquid-to-air sidecar CDU configurations.
HGX Rubin NVL8 Innovation
The 2U16X-GNR2/DLC RUBIN impressed attendees by packing an NVIDIA HGX Rubin NVL8 board with eight Rubin GPUs into a compact 2U chassis. This fully liquid-cooled system eliminates fans while cooling E1.S drives, CPUs, and GPUs. It operates on a 54V DC busbar and features NVIDIA ConnectX-9 SuperNICs and BlueField-4 DPUs for networking.
The HGX 8-GPU platform underwent major changes in this generation, including a change in GPU orientation in the tray. This change enables it to work in high-density, liquid-cooled racks.
The server is built on a dual-socket Intel Xeon 6 platform supporting Xeon 6700P, 6500P, and 6700E series processors in LGA 4710 sockets, with 16+16 DIMM slots at 2DPC configuration. Eight 800Gbps OSFP ports via NVIDIA ConnectX-9 and 8x hot-swap E1.S NVMe bays complete the specifications, while NVIDIA quotes 400 PFLOPS of NVFP4 compute (sparse) performance.
Related
