ASRock 4U16X-GNR2 packs 8 B300 GPUs, demands liquid cooling

# Summary ASRock Rack's 4U16X-GNR2 is a compact server that integrates eight NVIDIA B300 GPUs, dual Intel Xeon 6 processors, and liquid cooling into a single 4U chassis designed for enterprise AI training, inference, and HPC workloads. The system leverages NVIDIA's fifth-generation NVLink fabric to deliver 1.8 TB/s GPU-to-GPU bandwidth and up to 2.3TB of total GPU memory, positioning it as a dense computing building block for large-scale AI clusters rather than a standalone appliance.