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Supermicro 4U barebone server chassis, matte black finish

Supermicro

Supermicro AS-4125GS-TNRT barebone server

SKU CH-31KE-XKMVN MPN AS-4125GS-TNRT

A 4U barebone server supporting up to eight direct-attached GPUs, dual EPYC 9004 processors and 24 DDR5 DIMM slots

  • Dual AMD EPYC 9004 processors for AI workloads
  • 24 DDR5 slots support up to 6TB memory capacity
  • Eight direct-connect GPU slots for flexible acceleration
  • Single M.2 slot enables fast storage expansion
  • 4U barebone chassis built for high-performance computing

AMD EPYC 9004 dual-socket barebone

The Supermicro AS-4125GS-TNRT is a 4U server barebone designed for AI and high-performance computing workloads. It accommodates dual AMD EPYC 9004 series processors and provides 24 DIMM slots for DDR5 memory. The platform targets organisations building dense GPU clusters for training and inference.

Flexible GPU support up to eight cards

This system replaces smaller GPU servers that cannot fit more than a few double-width accelerators. It accepts up to eight direct-attached, full-length GPUs in active or passive configurations. The jump is worth it when workloads demand maximum GPU density in a single chassis rather than distributed nodes.

M.2 slot and memory capacity limits

Storage expansion inside the chassis is restricted to a single M.2 slot, limiting local boot or cache options. Memory capacity reaches 6TB across the 24 DDR5 slots, so workloads exceeding that footprint must scale across multiple nodes. The 4U form factor also constrains rack density compared to shallower designs.

How it compares

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

Price $15,995.99
Pricier than about 90% 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

Size & build
Shipping weight20.55 kg
Package size1041 × 686 × 673 mm

Questions about this item

What GPU form factor does the 4U chassis accept?

The chassis supports up to eight double-width, full-length GPUs connected through direct-attach PCIe slots.

How are the AMD EPYC 9004 processors seated during assembly?

Install each CPU into its SP5 socket, apply thermal compound evenly, then secure the heatsink with the supplied retention brackets before adding memory.

Which memory modules can be replaced later?

All twenty-four DDR5 DIMM slots are user-accessible, so any module can be swapped or upgraded without removing the motherboard.

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