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Silver 1U rackmount barebones server chassis with four front hot-swap drive bays

GIGABYTE

GIGABYTE R133-C13-ACB1 barebone server AMD EPYC 4005/4004 Ryzen 9000/7000 1U

SKU CH-QBSN-T3JPQ MPN R133-C13-ACB1

1U barebones server supports AMD EPYC 4005/4004 and Ryzen 9000/7000 CPUs with dual-channel DDR5 ECC memory, four hot-swap SATA bays, dual 1 Gb/s LAN and a full-height PCIe Gen5 GPU slot

  • ProcessorAMD Ryzen 7000 Series
  • Processor socketAM5
  • Target workloadGeneral Purpose Server
  • Supports AMD EPYC 4004 or Ryzen 7000 CPUs for flexible compute
  • Dual-channel DDR5 ECC memory across four DIMM slots ensures data integrity
  • Four hot-swap bays accept 3.5 or 2.5 inch SATA drives for dense storage
  • Full-height PCIe Gen5 x16 slot fits a dual-slot GPU for acceleration
  • Dual 1GbE LAN ports via Broadcom BCM5720 provide reliable network connectivity

Purpose-Built 1U Server Barebone

The GIGABYTE R133-C13-ACB1 is a 1U rackmount barebone designed for AMD EPYC 4004, EPYC 4005 and Ryzen 7000 and 9000 series processors on the AM5 socket. It targets small-to-medium businesses and hosted service providers that need a general-purpose server platform with enterprise manageability features such as GIGABYTE Management Console and GIGABYTE Server Management software.

Build Integration and Expansion

The chassis provides four 3.5-inch or 2.5-inch SATA hot-swap drive bays, a single M.2 slot with PCIe Gen4 x4 interface, one full-height full-length PCIe Gen5 x16 slot that accepts a dual-slot GPU and one full-height half-length PCIe Gen4 x4 slot. Dual 1Gb/s LAN ports are provided via the Broadcom BCM5720 controller and memory capacity scales across four DDR5 ECC or non-ECC UDIMM slots in dual-channel configuration.

Sustained-Load Behaviour

A platinum-rated power supply supports continuous 24x7 operation while driving a dual-slot Gen5 GPU and a high-core-count CPU within the compact 1U form factor. The platform is validated for server-grade reliability so that hosted workloads and business-critical applications can run without interruption over extended periods.

How it compares

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

Price $1,225.99
Cheaper than about 84% 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 workloadGeneral Purpose Server
Processor
ProcessorAMD Ryzen 7000 Series
Processor socketAM5
Power
Built-in batteryNo
Size & build
Shipping weight25.38 kg
Package size1041 × 597 × 241 mm

Questions about this item

What thermal limit appears first when the single EPYC 4005 CPU runs at full load in the 1U chassis?

The 1U form factor restricts cooler height, so CPU thermals become the first bottleneck under sustained load.

How loud are the system fans when the server runs 24/7 with a Gen5 GPU installed?

Dual-slot GPU airflow forces higher fan speeds, producing noticeable noise in a 1U rackmount running continuously.

Which DDR5 ECC UDIMMs must I already own to populate the four memory slots?

You need DDR5 ECC or non-ECC UDIMMs compatible with the AM5 socket and dual-channel architecture.

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