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Supermicro

Supermicro AS -4125GS-TNRT-G1 rack server dual EPYC 9124 16C 3.00GHz 1.5TB DDR5 1.9TB NVMe 2x L40S

SKU CH-XPPN-YZ0HT MPN AS -4125GS-TNRT-G1

A 4U rack server with dual 16-core EPYC 9124 CPUs, 1.5TB DDR5, 1.9TB NVMe storage and two NVIDIA L40S GPUs for GPU-accelerated workloads

  • WorkloadGeneral Purpose Server
  • TypeRack
  • Rack Height4U
  • LEDsHard drive activity LED Network activity LEDs Power status L
  • Hot-swap Fans8 heavy duty fans with optimal fan speed control
  • CPU TypeAMD EPYC 9004 Series
  • Dual AMD EPYC 9124 processors provide 16 cores each at 3.00 GHz for demanding workloads
  • Two NVIDIA L40S PCIe GPUs accelerate AI inference and graphics-intensive tasks
  • 5 TB DDR5-5600 memory running at 4800 MT/s supports large datasets and virtualization
  • 9 TB U.2 NVMe SSD delivers fast storage for boot and active data
  • Onboard dual 10GbE RJ45 ports enable high-speed network connectivity

Dual EPYC 9124 GPU Server

This 4U rack system ships with two AMD EPYC 9124 processors, each running at 3.00 GHz with 16 cores, plus two NVIDIA L40S PCIe graphics cards. It arrives with 1.5TB of DDR5-5600 memory installed across 24 slots and a 1.9TB U.2 NVMe SSD. Four hot-swap 2.5-inch NVMe bays and two hot-swap 2.5-inch SATA bays sit at the front, while an M.2 PCIe 3.0 x4 slot is also available. Onboard dual 10GbE RJ45 and four 2000W Titanium power supplies complete the platform.

Suited for dense GPU workloads.

The dual-socket design and twin GPUs suit training, inference and simulation jobs that scale across high core counts and memory bandwidth. Eight heavy-duty fans with optimal speed control keep thermals in check under sustained load. Buyers who need a quiet tower chassis or a single-socket platform with lower power draw should look at something else. The 4U height also rules out shallow racks or space-constrained cabinets.

Memory ceiling of 8TB

The board supports up to 8TB of ECC DDR5 RDIMM across the 24 DIMM slots, running at 4800MT/s with the installed EPYC 9004 series processors and at 6000MT/s with EPYC 9005 series processors. This capacity limit is the primary factor when planning large in-memory databases or multi-tenant virtualisation clusters.

Highlights

  • Dual AMD EPYC 9124 processors provide 16 cores each at 3.00 GHz for demanding workloads
  • Two NVIDIA L40S PCIe GPUs accelerate AI inference and graphics-intensive tasks
  • 5 TB DDR5-5600 memory running at 4800 MT/s supports large datasets and virtualization
  • 9 TB U.2 NVMe SSD delivers fast storage for boot and active data
  • Onboard dual 10GbE RJ45 ports enable high-speed network connectivity

Specifications

BrandSUPERMICRO
ModelAS -4125GS-TNRT-G1
WorkloadGeneral Purpose Server
TypeRack
Rack Height4U
LEDsHard drive activity LED
Network activity LEDs
Power status LED
System Overheat & Power Fail LED
Hot-swap Fans8 heavy duty fans with optimal fan speed control
CPU TypeAMD EPYC 9004 Series
CPU Speed9124 (3.00 GHz)
Number of CPU Cores16-Core Processor
Cache Memory64 MB
# of Processors Installed2
MAX Processors2
Installed Memory Size1.5TB
Memory TypeDDR5 5600
Max Memory Capacity8TB
Memory FeaturesMax Memory (1DPC): Up to 6TB 4800MT/s ECC DDR5 RDIMM (AMD EPYC 9004 Series Processor)
Max Memory (1DPC): Up to 6TB 6000MT/s ECC DDR5 RDIMM (AMD EPYC 9005 Series Processor)
Number of Memory Slots24
SSD (Installed)1 x 1.9TB U.2 NVMe SSD
Servers_Graphic Installed1
GPU Type2 NVIDIA L40S PCIe
Ethernet ControllerOnboard dual 10GbE RJ45
Expansion Bays2 front hot-swap 2.5" SATA drive bays
4 front hot-swap 2.5" NVMe drive bays
1 M.2 PCIe 3.0 x4 NVMe slot (M-key)
Power Characteristics4 x 2000W Titanium Level
TemperatureOperating Temperature: 10°C to 35°C (50°F to 95°F)
Non-operating Temperature: -40°C to 60°C (-40°F to 140°F)
HumidityOperating Relative Humidity: 8% to 90% (non-condensing)
Non-operating Relative Humidity: 5% to 95% (non-condensing)
Dimensions7" x 17.2" x 29"
Weight65.5 lbs.
Shipping weight45.36 kg
Package size1041 × 686 × 675 mm

Questions about this item

What GPU power cables must my power supply provide for the 2 NVIDIA L40S cards?

Each L40S requires a 16-pin 12VHPWR connector; the four 2000W titanium PSUs in this server deliver the needed cables internally.

Can I keep my existing DDR5-4800 RDIMMs when adding memory to the 24 slots?

Yes, the EPYC 9004 series supports up to 6 TB of DDR5-4800 ECC RDIMM in a 1 DPC configuration alongside the installed 1.5 TB of DDR5-5600.

How do I verify the dual 10GbE RJ45 ports are linked at full speed after setup?

Check the network activity LEDs on the front panel; both should show solid amber for 10 Gb/s link and blink during traffic.

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