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Silver 2U rackmount barebone server chassis with twelve front drive bays

ASUS

ASUS RS521A-E12-RS12U-20TW1G barebone server 1 CPU 24 DDR5 12 NVMe 2000W

SKU CH-1GMX-14QZW MPN RS521A-E12-RS12U-20TW1G

A 2U barebone server supporting a single AMD EPYC 9005 processor, 24 DDR5 ECC memory slots, 12 hot-swap NVMe bays, five PCIe 5.0 slots for two dual-slot GPUs.

  • Single AMD EPYC 9005 up to 192 cores for heavy compute
  • 24 DDR5 ECC channels deliver 5200 MHz memory bandwidth
  • 12 hot-swap NVMe bays plus 2 M.2 slots scale storage fast
  • 5 PCIe 5.0 slots support 2 dual-slot GPUs for AI workloads
  • 1+1 redundant 2000 W 80PLUS Titanium PSU ensures uptime

Single-Socket EPYC 9005 Platform

This 2U barebones server accepts one AMD EPYC 9005 or 9004 series processor up to 192 cores and 400 W TDP. It targets data-centre teams that need dense compute for AI, HPC or virtualisation workloads in a standard rack footprint.

24-Channel DDR5 ECC Memory Subsystem

Twenty-four DDR5 registered ECC slots run in 12-channel mode at 5200 MHz, supporting up to 3 TB total capacity. This bandwidth ceiling decides whether the chassis can feed your working set without stalling.

Twelve Hot-Swap NVMe Bays

The front panel holds twelve hot-swap NVMe drives, while two rear M.2 slots and five PCIe 5.0 slots accommodate up to two dual-slot GPUs such as NVIDIA A100 or AMD Instinct. Builds needing more than twelve front NVMe devices or more than two full-length accelerators will outgrow this chassis.

Highlights

  • Single AMD EPYC 9005 up to 192 cores for heavy compute
  • 24 DDR5 ECC channels deliver 5200 MHz memory bandwidth
  • 12 hot-swap NVMe bays plus 2 M.2 slots scale storage fast
  • 5 PCIe 5.0 slots support 2 dual-slot GPUs for AI workloads
  • 1+1 redundant 2000 W 80PLUS Titanium PSU ensures uptime

Specifications

No published specifications for this item yet.

Questions about this item

What does the 24 DDR5 slots mean for memory capacity in this server?

The board provides 24 DDR5 ECC registered slots in a 12-channel layout, supporting up to 3 TB total at 5200 MHz.

How does PCIe 5.0 affect the 12 NVMe bays and five expansion slots?

The 12 front hot-swap bays and five full-length slots all run at PCIe 5.0, giving each NVMe drive and add-in card the full 5.0 bandwidth.

What physical space and power connections does the 2U chassis require?

The unit occupies 2U in a 19-inch rack and draws power through the dual 2000 W 80PLUS Titanium supplies.

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