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Silver 4U rack server chassis with front drive bays and rear expansion slots

GIGABYTE

GIGABYTE XL43-ZXO-AAS2 barebone server AMD EPYC 9005 dual 24 DDR5 8 GPU

SKU CH-59G9-ZNT69 MPN XL43-ZXO-AAS2

A 4U barebone server supporting dual EPYC 9005 processors, 24 DDR5 DIMM slots, eight Gen5 GPU slots and four 2.5" NVMe bays

  • Dual AMD EPYC 9005 processors deliver 24 cores per socket for heavy compute workloads
  • 24 DDR5 RDIMM slots across 12 channels per CPU provide massive memory bandwidth
  • Eight full-height PCIe Gen5 x16 slots support up to 8 dual-slot GPUs for AI acceleration
  • Four 2.5-inch Gen5 NVMe hot-swap bays enable fast storage expansion without downtime
  • Dual 10 Gb/s LAN ports via Intel X710-AT2 ensure high-throughput network connectivity

Dual EPYC 9005 Barebone Server

The GIGABYTE XL43-ZXO-AAS2 is a 4U barebone server built around dual AMD EPYC 9005 processors. It targets organisations deploying dense GPU compute for AI training, high-performance computing or large-scale inference workloads. The platform provides 24 DDR5 RDIMM slots across 12 memory channels per CPU. Buyers needing a pre-configured system with integrated storage controllers or a smaller rack footprint should evaluate other form factors.

Eight Gen5 GPU Slots With Redundant Cooling

Eight full-height, full-length PCIe Gen5 x16 slots accept dual-slot GPUs, each wired with 16 lanes directly from the CPUs. An additional Gen5 x16 slot is available for networking or storage expansion. Dual 10 Gb/s LAN ports via Intel X710-AT2 handle data ingress. The 4U chassis uses redundant fans to move air across the GPU array while maintaining stable inlet temperatures during typical multi-GPU training runs.

Sustained Load Behaviour In 4U Density

Under continuous full-load operation the eight GPUs and both CPUs draw significant power through the platform's redundant supply architecture. The 12-channel memory subsystem per socket sustains bandwidth for memory-bound kernels without throttling. Four hot-swap 2.5-inch Gen5 NVMe bays and two M.2 slots with Gen3 x2 and x1 links keep local datasets fed to the compute complex during extended runs.

Highlights

  • Dual AMD EPYC 9005 processors deliver 24 cores per socket for heavy compute workloads
  • 24 DDR5 RDIMM slots across 12 channels per CPU provide massive memory bandwidth
  • Eight full-height PCIe Gen5 x16 slots support up to 8 dual-slot GPUs for AI acceleration
  • Four 2.5-inch Gen5 NVMe hot-swap bays enable fast storage expansion without downtime
  • Dual 10 Gb/s LAN ports via Intel X710-AT2 ensure high-throughput network connectivity

Specifications

No published specifications for this item yet.

Questions about this item

How do the 24 DDR5 DIMMs install across the two EPYC 9005 processors?

Each processor provides 12 DDR5 channels, so you populate 12 DIMMs per CPU to fill all 24 slots and keep memory bandwidth balanced.

Which drive bays will need the first drive replacements under heavy write workloads?

The four 2.5-inch Gen5 NVMe hot-swap bays take the sustained write traffic, so those drives wear out before the two M.2 slots that run at Gen3 x2 and x1.

At what point does the 10 Gb/s LAN become the throughput bottleneck?

With dual Intel X710-AT2 ports delivering 10 Gb/s each, the network link saturates before the eight Gen5 x16 GPU lanes or the single additional Gen5 x16 slot reach their limits.

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