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Silver 2U rackmount barebone server chassis with front power button and USB ports

ASRock Rack

ASRock Rack 2U1G-B650/AQUA barebone server 2U AM5 DDR5 192GB

SKU CH-WR6M-S7PTE MPN 2U1G-B650/AQUA

2U rackmount barebone for single-socket AMD EPYC 4005/4004 or Ryzen 9000/8000/7000 CPUs with four DDR5 5600 slots up to 192GB, dual 1GbE LAN, triple-slot PCIe 5.0 x16 and hot-swap 1200W CRPS power

  • ProcessorSupports AMD EPYC 4005/4004 and AMD Ryzen 9000/8000/7000 Ser
  • Installed RAMNo Memory Installed
  • Form factor2U Rackmount
  • Processor socketAM5
  • Target workloadGeneral Purpose Server
  • Preinstalled processorNo CPU Installed
  • 2U rackmount form factor fits standard cabinets
  • Single AM5 socket accepts EPYC 4005/4004 or Ryzen 9000/8000/7000 CPUs
  • Four DDR5 5600 slots scale to 192 GB ECC or non-ECC memory
  • Dual 1 GbE Intel I210 ports provide redundant network links
  • 1+1 hot-swap 1200 W 80 PLUS Platinum CRPS units ensure power continuity

General-purpose 2U barebone

The ASRock Rack 2U1G-B650/AQUA is a 2U rackmount server barebone designed for single-socket AM5 builds. It supports AMD EPYC 4004, EPYC 4005 and Ryzen 7000, 8000, 9000 series processors with up to 192GB of DDR5 5600 memory across four 288-pin DIMM slots. Redundant 1+1 CRPS power supplies deliver 1000W at 100-127Vac or 1200W at higher input.

Single-socket AMD platform

Suits integrators building a general-purpose server on a single AM5 CPU with PCIe5.0 x16 and PCIe4.0 x4 expansion. Not suited for dual-processor configurations or workloads requiring multi-socket scaling. Builders needing higher network throughput than 1GbE or more than two M.2 slots should evaluate other platforms.

192GB DDR5 5600 ceiling

The maximum supported memory is 192GB of DDR5 5600 across four DIMM slots. This capacity limit determines whether the chassis can host the dataset or virtualisation density your workload demands.

How it compares

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

Price $1,375.99
Cheaper than about 81% 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
Brand nameASRock Rack
Model name2U1G-B650/AQUA
Target workloadGeneral Purpose Server
Processor
ProcessorSupports AMD EPYC 4005/4004 and AMD Ryzen 9000/8000/7000 Series Processors
Processor socketAM5
Preinstalled processorNo CPU Installed
Max supported CPUs1
Memory
Installed RAMNo Memory Installed
RAM slots4 × 288Pin
Maximum supported memory192 GB
Supported memoryDDR5 5600
Storage
Preinstalled storageNo Storage Installed
M.2 slots1 M-key (PCIe5.0 x4), supports 2280/2242 form factor [CPU]
1 M-key (PCIe4.0 x4), supports 2280/2242 form factor [FCH]
Connectivity
Primary LAN controllerIntel I210
Top LAN speed1 Gigabit
Ports & slots
PCIe slots1 FHFL triple-slot PCIe5.0 x16 via RB2UX16L_G5_RDV
1 FHHL PCIe4.0 x4 via riser cable
Front USB ports2 x USB 3.2 Gen 1
Serial ports1
VGA ports1
DisplayPort connectors1 x DisplayPort
Rear USB ports4 x USB 3.2 Gen 1
Ethernet port2
Power
Power supply1+1 Hot-swap CRPS 1000 W @ 100-127Vac input / 1200 W @ 200-240Vac input
Size & build
Form factor2U Rackmount
Product dimensions3.5 in × 18.8 in × 16.9 in
Shipping weight20.37 kg
Package size940 × 635 × 287 mm
Environment & compliance
Temperature rangeOperation temperature: 10 °C to 35 °C / Non operation temperature: -40 °C to 70 °C
Humidity rangeNon operation humidity: 20% ~ 90% ( Non condensing)
More details
Button countPower button w/ LED, System Reset button
Indicator lightsSystem Fail LED, LAN1/LAN2 Activity, Power Status LED
BIOS featuresAMI UEFI BIOS; 256Mb (32 MB) SPI Flash ROM
Plug and Play, ACPI 6.4 compliance wake up events, SMBIOS 3.5
Fan configurationDynatron L35 (w/ 3 fixed 80 × 38 mm fans), 1 PWM easy-swap 80 × 38 mm fan

Questions about this item

Will the hot-swap CRPS power supplies need periodic replacement?

The 1+1 redundant 1200 W CRPS units are hot-swappable, so a failed module can be replaced without shutting down the server.

What thermal limit appears first when the triple-slot PCIe 5.0 x16 GPU runs continuously?

A full-length, triple-slot card draws the most power and exhausts heat into the 2U chassis, making GPU thermals the first sustained-load constraint.

How loud are the system fans when the 1200 W PSUs and CPU run 24/7?

Dual hot-swap CRPS units and a high-TDP AM5 processor require active cooling, so fan noise is audible in a quiet room under constant load.

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