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Silver 1U rackmount barebone server, two front 2.5 inch drive bays, dual RJ45 ports

ASRock Rack

ASRock Rack 1U2S-B650 barebone server AM5 2×2.5" SATA bays 2×1GbE

SKU CH-169G-43B2G MPN 1U2S-B650

1U rackmount barebone supporting AM5 EPYC 4004 and Ryzen 7000/8000/9000 CPUs with four DDR5 ECC slots, two hot-swap 2.5" SATA bays, dual 1GbE LAN and 315W 80-PLUS Gold PSU

  • ProcessorAMD Ryzen 7000 Series
  • Processor socketAM5
  • Target workloadEdge Server
  • 1U rackmount with 80-PLUS Gold 315W PSU for efficient power
  • Single AM5 socket supports EPYC 4004 and Ryzen 7000/8000/9000 CPUs
  • Four DDR5 ECC UDIMM slots deliver high-capacity memory
  • Two hot-swap 2.5″ SATA bays plus one fixed 3.5″ bay for storage flexibility
  • Dual 1GbE Intel i210 ports plus PCIe 5.0 and 4.0 M.2 slots for fast I/O

Compact 1U server barebone

The ASRock Rack 1U2S-B650 is a 1U rackmount barebone designed for edge workloads. It fits a single AM5 socket and a 315W 80-PLUS Gold power supply. The chassis holds two hot-swap 2.5" SATA bays and one fixed 3.5" bay.

Suited for single-socket edge builds

This unit suits builders who need a compact AMD platform with dual 1GbE ports and a full-height PCIe 4.0 x16 slot. It does not suit buyers who require dual-socket capacity, 10GbE networking or more than two hot-swap drive bays.

AM5 socket with DDR5 ECC support

The motherboard provides four DDR5 UDIMM slots with ECC and non-ECC support for AMD Ryzen 7000, 8000, 9000 and EPYC 4004 processors. It adds one M.2 PCIe 5.0 x4 and one M.2 PCIe 4.0 x4 slot for storage expansion.

How it compares

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

Price $730.99
Cheaper than about 92% of the 532 comparable items (median $2,503.49).

New to this? Buying server hardware with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Target workloadEdge Server
Processor
ProcessorAMD Ryzen 7000 Series
Processor socketAM5
Size & build
Shipping weight11.47 kg
Package size625 × 565 × 205 mm

Questions about this item

How many DIMM slots does the 1U2S-B650 provide for DDR5 ECC or non-ECC memory?

The barebone includes four DIMM slots that accept DDR5 ECC and non-ECC UDIMMs in a two DIMMs per channel layout.

What is the rated efficiency and output of the included power supply?

An 80 PLUS Gold certified 315 W unit is pre-installed in the 1U chassis.

Which processor socket must the CPU match for this barebone?

The board uses a single AM5 socket (LGA 1718) for AMD EPYC 4004 or Ryzen 7000/8000/9000 series processors.

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