By Patrick Kennedy
Publication Date: 2026-11-02 04:00:00
At OCP Global Summit 2026 in San Jose, we stopped by the ASRock Rack booth and saw a broad set of NVIDIA systems. That included a full NVIDIA Vera Rubin NVL72 rack. Next to it were HGX Rubin NVL8 servers in both 2U and 5U, two NVIDIA MGX RTX PRO servers, and a dual NVIDIA Vera CPU server. We also spotted the liquid-cooled NVIDIA Spectrum-X SN6600-LD switch and the passively cooled NVIDIA RTX PRO 4500 Blackwell Server Edition GPU.
A big theme was liquid cooling. ASRock Rack used direct-to-chip liquid cooling on its rack-scale system and HGX servers, including an 8x RTX PRO 6000 PCIe server.
ASRock Rack XGMRACK-VR/NVL72 NVIDIA Vera Rubin NVL72
The XGMRACK-VR/NVL72 is ASRock Rack’s version of the NVIDIA Vera Rubin NVL72. It is a 48RU NVIDIA MGX rack with a 5000A busbar and a liquid manifold. Inside are 18 Vera Rubin compute trays and nine NVLink 6 switch trays, for a total of 36 NVIDIA Vera CPUs and 72 NVIDIA Rubin GPUs.
NVIDIA lists the full rack at 3,600 PFLOPS of NVFP4 inference (sparse) and 2,520 PFLOPS of NVFP4 training (dense). It has 20.7TB of HBM4, and each Rubin GPU gets 288GB. Power comes from four 3RU 19″ power shelves. Each shelf is rated at 110kW and uses six 18.3kW PSUs plus bulk capacitors. ASRock Rack offers in-rack, in-row, RDHx, or liquid-to-air sidecar CDU options.
Each compute tray is a 1U NVIDIA…
