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Silver 1U rackmount chassis holding two compute nodes with dual-slot GPU slots

ASRock Rack

ASRock Rack 1U2N2G-B550 1U 2-node barebone server

SKU CH-VMWG-6SPWX MPN 1U2N2G-B550

1U rackmount barebone holding two independent AMD Ryzen 5000 nodes, each with a full-height PCIe 4.0 x16 slot and dual 1GbE LAN

  • ProcessorAMD Ryzen 5000 Series
  • Processor socketAM4
  • Target workloadAI/ML/HPC
  • Dual nodes in 1U save rack space
  • AMD Ryzen 5000 CPUs power AI workloads
  • Each node takes one full-height dual-slot PCIe 4.0 x16 GPU
  • One M.2 slot per node supports SATA or PCIe 4.0 x4 storage
  • Dual 1 GbE Intel i210 ports plus IPMI remote management per node

Dual-node density

This 1U barebone fits two independent AMD Ryzen 5000 nodes into a single rack unit. Each node accepts a single AM4 processor and four DDR4 ECC or non-ECC UDIMMs. A full-length dual-slot PCIe 4.0 x16 slot per node supports GPU acceleration for AI, ML or HPC workloads.

Platinum efficiency

Redundant 1+1 CRPS power supplies rated at 1200 W each deliver Platinum-class efficiency at typical loads. Intel i210 dual 1 GbE ports per node handle management and data traffic without adding discrete NICs. Remote IPMI access lets administrators monitor thermals and power draw from anywhere.

Sustained GPU throughput

Each node maintains full PCIe 4.0 x16 bandwidth to its GPU during extended training or inference runs. One M.2 slot per node accepts a PCIe 4.0 x4 or SATA 6 Gb/s drive for local scratch space. The compact layout is not suited for builders who need additional expansion slots or higher single-thread frequencies.

How it compares

Measured against everything we stock in Barebone Servers & DIY Kits, at today’s prices. Recalculated every night.

Price $1,717.99
Cheaper than about 72% of the 532 comparable items (median $2,503.49).

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Specifications

Product
Target workloadAI/ML/HPC
Processor
ProcessorAMD Ryzen 5000 Series
Processor socketAM4
Size & build
Shipping weight20.87 kg
Package size864 × 635 × 254 mm

Questions about this item

How do I install CPUs in the two nodes of this 1U server, and what step is often missed?

Install one AMD Ryzen 5000 processor into each AM4 socket, then apply thermal paste and attach the heatsink before closing the chassis.

Which components in each node will need replacement first during long-term operation?

The 1200W CRPS power supply units and system fans are the primary field-replaceable parts that wear over time.

What thermal limit appears first when both nodes run sustained AI workloads?

The 1U chassis airflow becomes the limiting factor before the CPUs reach their maximum operating temperature.

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