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Silver 1U rack server front with drive bays and status LEDs

Supermicro

Supermicro AS -1125HS-TNR-G1 1U rack server EPYC 9454P 48-core 384GB DDR5 960GB NVMe

SKU CH-5M3S-Z58CT MPN AS -1125HS-TNR-G1

A 1U rack server with a 48-core EPYC 9454P processor, 384GB DDR5 memory and a 960GB NVMe drive

  • WorkloadGeneral Purpose Server
  • TypeRack
  • Rack Height1U
  • LEDsHDD activity LAN1 activity Power status System information
  • Hot-swap Fans8 counter-rotating 40x40x56mm Fan(s)
  • SecurityTrusted Platform Module (TPM) 2.0 Silicon Root of Trust (RoT
  • 48-core EPYC 9454P powers heavy workloads
  • 384 GB DDR5-5600 memory scales to 6 TB
  • 960 GB U.2 NVMe SSD delivers fast storage
  • 8 hot-swap counter-rotating fans maintain cooling
  • TPM 2.0 and Silicon Root of Trust secure firmware

1U Rack Server for General Purpose Workloads

The Supermicro AS -1125HS-TNR-G1 is a 1U rack server built for general purpose workloads. It ships with a single AMD EPYC 9454P 48-core processor running at 2.75 GHz and 256 MB of L3 cache. The system includes 384 GB of DDR5-5600 memory across 24 slots and a 960 GB U.2 NVMe SSD. Eight hot-swap counter-rotating fans provide cooling in a compact chassis.

Upgrade from Single-Socket or Lower-Core Platforms

This server replaces older single-socket systems or dual-socket configurations with fewer total cores. The jump is worth it when workloads demand 48 cores and 384 GB of DDR5 memory in a 1U form factor. Support for a second EPYC 9004 series processor allows scaling to 96 cores without changing chassis. Memory capacity can grow to 6 TB using ECC DDR5 RDIMMs at 4800 MT/s.

Suits Density-Focused Compute.

This platform suits buyers who need high core count and large memory in a single rack unit for virtualisation, databases or HPC head nodes. It is not for buyers who require GPU acceleration, as the 1U height and fan layout do not support full-height add-in cards. Builders needing more than two U.2 NVMe drives or front-loading storage bays should look at larger chassis designs.

Highlights

  • 48-core EPYC 9454P powers heavy workloads
  • 384 GB DDR5-5600 memory scales to 6 TB
  • 960 GB U.2 NVMe SSD delivers fast storage
  • 8 hot-swap counter-rotating fans maintain cooling
  • TPM 2.0 and Silicon Root of Trust secure firmware

Specifications

BrandSUPERMICRO
ModelAS -1125HS-TNR-G1
WorkloadGeneral Purpose Server
TypeRack
Rack Height1U
LEDsHDD activity
LAN1 activity
Power status
System information
Hot-swap Fans8 counter-rotating 40x40x56mm Fan(s)
SecurityTrusted Platform Module (TPM) 2.0
Silicon Root of Trust (RoT) - NIST 800-193 Compliant
Cryptographically Signed Firmware
Secure Boot
Secure Firmware Updates
Automatic Firmware Recovery
Supply Chain Security: Remote Attestation
Runtime BMC Protections
System Lockdown
CPU TypeAMD EPYC 9004 Series
CPU Speed9454P (2.75 GHz)
Number of CPU Cores48-Core Processor
Cache Memory256 MB L3 Cache
# of Processors Installed1
MAX Processors2
Installed Memory Size384GB
Memory TypeDDR5-5600
Max Memory Capacity6TB
Memory FeaturesMax Memory (1DPC): Up to 6TB 4800MT/s ECC DDR5 RDIMM (AMD EPYC 9004 Series Processor, MB R1.x/R2.0/R2.01)
Max Memory (1DPC): Up to 6TB 6000MT/s ECC DDR5 RDIMM (AMD EPYC 9005 Series Processor, MB R2.0)
Max Memory (1DPC): Up to 6TB 6400MT/s ECC DDR5 RDIMM (AMD EPYC 9005 Series Processor, MB R2.01)
Number of Memory Slots24
SSD (Installed)960GB U.2 NVMe SSD
Expansion Slots1 PCIe 5.0 x16 FHHL slot
2 PCIe 5.0 x16 FHFL slots
1 PCIe 5.0 x16 AIOM slot (OCP 3.0 compatible)
Expansion Bays8 front hot-swap 2.5" NVMe*/SAS*/SATA* drive bays
2 M.2 PCIe 3.0 x4 NVMe slots (M-key 2280/22110)
Other ports1 RJ45 1 GbE Dedicated BMC LAN port
2 USB 3.0 ports(rear)
1 USB 3.0 port(front)
1 VGA port
Power Characteristics2 x 1200W Redundant (1 + 1) Titanium Level (96%) power supplies
TemperatureOperating Temperature: 10°C to 35°C (50°F to 95°F)
Non-operating Temperature: -40°C to 70°C (-40°F to 158°F)
HumidityOperating Relative Humidity: 8% to 90% (non-condensing)
Non-operating Relative Humidity: 5% to 95% (non-condensing)
Dimensions1.7" x 17.2" x 29.4"
Weight32 lbs.
Shipping weight15.88 kg
Package size508 × 508 × 102 mm

Questions about this item

What rack depth and clearance does the 1U chassis with 8 counter-rotating 40x40x56mm fans need?

The 1U rack height fits a standard 19-inch rack; allow space front and rear for the 8 hot-swap 40x40x56mm counter-rotating fans to draw and exhaust air without obstruction.

Which CPU socket preparation step is most often missed when installing the single EPYC 9454P on the SP5 platform?

Install the AMD EPYC 9004 series processor into the SP5 socket using the correct torque sequence and load-plate orientation; skipping the specified torque pattern can cause uneven contact and boot failure.

When do the 24 DDR5-5600 RDIMM slots require battery-backed NVDIMM or standard ECC RDIMM replacement?

Replace ECC DDR5 RDIMMs only when the BMC logs correctable-error thresholds or a module fails POST; the 24 slots support up to 6TB at 4800 MT/s with EPYC 9004 or 6000 MT/s with EPYC 9005.

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