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Update on RISC-V Standards and Adoption at Hot Chips 2026
MikroTik CRS804-4DDQ-hRM 400GbE switch delivers four QSFP56-DD ports at under $0.70/Gbps, targeting cost-conscious data center and RDMA network deployments. Priced at $1295 list (street ~$1100), the half-width switch provides 1.6Tbps total switching capacity and has been used in production for an 8x NVIDIA GB10 cluster and an NVIDIA GB300 Station cluster with DR4 optics. Each 400GbE port can be split into 2x 200GbE QSFP56 ports for flexible high-speed connectivity. The switch includes two 10Gbase-T management ports, a console port, and a reset button on the front. Redundant power comes from dual Gospower 350W PSUs, and the two fans are hot-swappable. Rack ears support half-width or standard 19-inch mounting, though the 387mm depth may challenge small lab setups. The unit measures 218mm wide and uses QSFP56-DD optics and DACs, not QSFP112 or OSFP found in higher-end NVIDIA Spectrum-X or ConnectX-8/9 gear. At roughly $0.70/Gbps, this is significantly cheaper than typical 1GbE switches on a per-Gbps basis, making it an affordable entry point for 400GbE networking in RDMA, AI cluster, and data center environments.