GoKawiilMikroTik's CRS804-4DDQ-hRM brings 400GbE switching to desktops for about $1,100
MikroTik has released the CRS804-4DDQ-hRM, a compact desktop switch offering four QSFP56-DD ports for a combined 1.6Tbps of 400GbE bandwidth. It carries a $1,295 list price but typically sells for around $1,100, and the reviewer has been running it in RDMA backends for NVIDIA GB10 and GB300 clusters for months.
GoKawiil's interpretation of the reporting above, not reported fact.
At under $0.70 per Gbps, this switch undercuts typical enterprise pricing for high-speed networking gear by a wide margin, making 400GbE accessible to home labs and small AI clusters that previously required far pricier data-center hardware. Its compatibility with widely available QSFP56-DD optics and DACs, rather than costlier QSFP112 or OSFP formats, further lowers the barrier for builders assembling GPU clusters like NVIDIA's GB10 and GB300 systems.
- Four QSFP56-DD ports deliver 1.6Tbps total switching capacity for roughly $1,100 street price.
- Ports can be split into 2x200GbE QSFP56 configurations for added flexibility.
- Its half-width but deep chassis (218mm x 387mm) may complicate multi-unit lab rack setups.
MikroTik CRS804-4DDQ-RM Switch — This is the star of the review: a compact, half-width switch with four QSFP56-DD ports delivering 400GbE each. It's an unusually accessible way to build a high-speed RDMA or GPU cluster backend in a home lab or small rack.
See MikroTik CRS804-4DDQ-RM Switch on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: servethehome.com — Rohit Kumar, 2026-09-03
Published there as: “Cheap Desktop 400GbE Switch MikroTik CRS804-4DDQ-HRM Review”
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