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AI Server
Build around your workload
Supermicro SYS-421GE-TNRT3: 4U Rackmount ai server. Compare processor, memory and expansion requirements; request a configured-system quote.
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Supermicro / PRODUCT DETAILS
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KEY SPECIFICATIONS / 01
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Supermicro / ORDER & INSTALLATION DETAILS
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Technical overview
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| Core count | Up to 64C/128T; Up to 320MB Cache per CPU |
|---|---|
| Memory | Slot Count: 32 DIMM slots Max Memory (1DPC): Up to 4TB 5600MT/s ECC DDR5 RDIMM Max Memory (2DPC): Up to 8TB 4400MT/s ECC DDR5 RDIMM |
| Memory voltage | 1.1V |
| Form factor | 4U Rackmount |
| Height | 7" (178 mm) |
| Width | 17.2" (437 mm) |
| Depth | 29" (737 mm) |
| Weight | Gross Weight: 100 lbs (45.3 kg) Net Weight: 65.5 lbs (29.7 kg) |
| Product series | GPU SuperServers |
| Real Supermicro enterprise server model | SYS-421GE-TNRT3 |
| Brand | Supermicro |
| Model | SYS-421GE-TNRT3 |
| Catalog line | Supermicro SuperServer |
| Manufacturer | Supermicro |
| Manufacturer P/N | SYS-421GE-TNRT3 |
| Model / P/N | Supermicro SYS-421GE-TNRT3 |
| Category | AI Server |
| Product family | Supermicro SuperServer |
| Product reference | Manufacturer documentation is confirmed during RFQ review when a public datasheet is not attached. |
| System model | SYS-421GE-TNRT3 |
| CPU | Dual Socket E (LGA-4677) 5th Gen Intel® Xeon® / 4th Gen Intel® Xeon® Scalable processors |
| Note | Supports up to 350W TDP CPUs (Air Cooled) Supports up to 385W TDP CPUs (Liquid Cooled) |
| Max GPU Count | Up to 8 double-width or 8 single-width GPUs |
| Supported GPU | NVIDIA PCIe: H100, H100 NVL, A100, L4, L40S, RTX 5000, RTX 6000 Ada Generation, RTX A4000 |
| CPU-GPU Interconnect | PCIe 5.0 x16 CPU-to-GPU Interconnect |
| GPU-GPU Interconnect | NVIDIA® NVLink™ Bridge (optional) |
| Network Connectivity | 2 RJ45 10GbE with Intel® X710-AT2 |
| Video | 1 VGA port |
| BIOS Type | AMI 32MB SPI Flash EEPROM |
| Software | SuperCloud Composer® (SCC) Supermicro Server Manager (SSM) Supermicro Update Manager (SUM) Supermicro SuperDoctor® 5 (SD5) Super Diagnostics Offline (SDO) Supermicro Thin-Agent Service (TAS) SuperServer Automation Assistant (SAA) New! |
| Power configurations | Power-on mode for AC power recovery ACPI Power Management |
| Hardware | Trusted Platform Module (TPM) 2.0 Silicon Root of Trust (RoT) – NIST 800-193 Compliant |
| Features | Cryptographically Signed Firmware Secure Boot Secure Firmware Updates Automatic Firmware Recovery Supply Chain Security: Remote Attestation Runtime BMC Protections System Lockdown |
| Fan | Fans with tachometer monitoring Pulse Width Modulated (PWM) fan connectors Status monitor for speed control |
| Temperature | Monitoring for CPU and chassis environment Thermal Control for fan connectors |
| Operating Systems | Hypervisor 8.2.1, Oracle Linux 9.0, RHEL 8.6, RHEL 9.0, Windows Server 2019, Windows Server 2022, Windows Server 2025 |
| Package | 26.57" (H) x 27" (W) x 41" (D) |
| Available Color | Black Front & Silver Body |
| Buttons | Power On/Off button System Reset button |
| LED | Hard drive activity LED Network activity LEDs Power status LED System Overheat & Power Fail LED |
| PCI-Express (PCIe) Configuration | Default 8 PCIe 5.0 x16 FHFL slots |
| Drive Bays Configuration | Default: Total 12 bays 4 front hot-swap 2.5" NVMe drive bays 8 front hot-swap 2.5" SATA drive bays |
| M.2 | 2 M.2 NVMe slots (M-key) |
| Fans | Up to 8 heavy duty fans with optimal fan speed control |
| Liquid Cooling | Direct to Chip (D2C) Cold Plate (optional) |
| Environmental Spec. | Operating Temperature: 10°C to 35°C (50°F to 95°F) Non-operating Temperature: -40°C to 60°C (-40°F to 140°F) Operating Relative Humidity: 8% to 90% (non-condensing) Non-operating Relative Humidity: 5% to 95% (non-condensing) |
HOW THIS PRODUCT FITS YOUR SYSTEM
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Match the processor generation, socket population and required heatsink.
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Use this checklist to describe the change. The host system and full configuration determine which parts will fit.
YOUR QUOTE REQUEST
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SUPPORT & REPLACEMENT
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We do not have confirmed sales and support dates for this part number.
Send us the full SYS-421GE-TNRT3 order code, software release and support details before planning long-term use.
Ask us to check the current sales and support statusProducts with similar names or connectors may still be incompatible. Compare the full specifications, installed system and software requirements.
Compare related products These products may be related, but we have not confirmed them as replacements.USING HARDWARE RESPONSIBLY
Consider repairability, remaining support and actual operating demand. Extending service life is useful only when the equipment still meets your security and reliability requirements.
Use measured average input power for the same workload. PSU ratings and processor TDP are different from total system power.
Energy difference = (current W − proposed W) × hours × units ÷ 1,000. Excludes cooling, embodied emissions and purchase costs.CONNECTION DETAILS
Choose the host adapters around the workload and the storage protocol. A server NIC, Fibre Channel HBA and SAS HBA serve different connections.
Browse the categories above for related equipment, then send us the full configuration so we can check the fit.
PRODUCT DETAILS
Supermicro / system composition
The complete platform reference defines the integration scope.
Record the exact board and revision.
Record the enclosure, backplane and cooling context.
Server configuration
Rack integration plan
Star Networking reviews upstream switching, storage path, OOB management, power input, rails and service details together so the delivered node can be installed without reworking the BOM.
25/100/400G uplinks, DAC/AOC, optics and OOB management are planned before shipment.
Supermicro SYS-421GE-TNRT3 is staged with CPU, DIMM, storage, controller, NIC, PSU and firmware profile.
Boot media, hot data tier, capacity tier and backup path are separated in the BOM.
Service terms, serial numbers, labels, packing details and delivery milestones are recorded with the order.
Deployment / workload
Choose platform options and confirm the operating environment before finalizing the design.
Balance core density, memory capacity, boot resilience, east-west traffic and support policy.
Align memory, storage latency, controller mode and network throughput with the application profile.
Plan resilient boot, management access, power redundancy and a repeatable firmware baseline.
Standardize node BOMs, spares, firmware and delivery batches before multi-system rollout.
Compatibility and BOM checks
Manufacturer specifications
This model appears in the manufacturer system matrix. Confirm current orderability, condition and the supplied configuration with your quotation.
| Manufacturer | Supermicro |
|---|---|
| System model | SYS-421GE-TNRT3 |
| CPU | Dual Socket E (LGA-4677) 5th Gen Intel® Xeon® / 4th Gen Intel® Xeon® Scalable processors |
| Core Count | Up to 64C/128T; Up to 320MB Cache per CPU |
| Note | Supports up to 350W TDP CPUs (Air Cooled) Supports up to 385W TDP CPUs (Liquid Cooled) |
| Max GPU Count | Up to 8 double-width or 8 single-width GPUs |
| Supported GPU | NVIDIA PCIe: H100, H100 NVL, A100, L4, L40S, RTX 5000, RTX 6000 Ada Generation, RTX A4000 |
| CPU-GPU Interconnect | PCIe 5.0 x16 CPU-to-GPU Interconnect |
| GPU-GPU Interconnect | NVIDIA® NVLink™ Bridge (optional) |
| Memory | Slot Count: 32 DIMM slots Max Memory (1DPC): Up to 4TB 5600MT/s ECC DDR5 RDIMM Max Memory (2DPC): Up to 8TB 4400MT/s ECC DDR5 RDIMM |
| Memory Voltage | 1.1V |
| Network Connectivity | 2 RJ45 10GbE with Intel® X710-AT2 |
| Video | 1 VGA port |
| BIOS Type | AMI 32MB SPI Flash EEPROM |
| Software | SuperCloud Composer® (SCC) Supermicro Server Manager (SSM) Supermicro Update Manager (SUM) Supermicro SuperDoctor® 5 (SD5) Super Diagnostics Offline (SDO) Supermicro Thin-Agent Service (TAS) SuperServer Automation Assistant (SAA) New! |
| Power configurations | Power-on mode for AC power recovery ACPI Power Management |
| Hardware | Trusted Platform Module (TPM) 2.0 Silicon Root of Trust (RoT) – NIST 800-193 Compliant |
| Features | Cryptographically Signed Firmware Secure Boot Secure Firmware Updates Automatic Firmware Recovery Supply Chain Security: Remote Attestation Runtime BMC Protections System Lockdown |
| CPU | 8+4 Phase-switching voltage regulator Monitors for CPU Cores, Chipset Voltages, Memory |
| Fan | Fans with tachometer monitoring Pulse Width Modulated (PWM) fan connectors Status monitor for speed control |
| Temperature | Monitoring for CPU and chassis environment Thermal Control for fan connectors |
| Operating Systems | Hypervisor 8.2.1, Oracle Linux 9.0, RHEL 8.6, RHEL 9.0, Windows Server 2019, Windows Server 2022, Windows Server 2025 |
| Form Factor | 4U Rackmount |
| Model | CSE-418G2TS-R5K40P |
| Height | 7" (178 mm) |
| Width | 17.2" (437 mm) |
| Depth | 29" (737 mm) |
| Package | 26.57" (H) x 27" (W) x 41" (D) |
| Weight | Gross Weight: 100 lbs (45.3 kg) Net Weight: 65.5 lbs (29.7 kg) |
| Available Color | Black Front & Silver Body |
| Buttons | Power On/Off button System Reset button |
| LED | Hard drive activity LED Network activity LEDs Power status LED System Overheat & Power Fail LED |
| PCI-Express (PCIe) Configuration | Default 8 PCIe 5.0 x16 FHFL slots |
| Drive Bays Configuration | Default: Total 12 bays 4 front hot-swap 2.5" NVMe drive bays 8 front hot-swap 2.5" SATA drive bays |
| M.2 | 2 M.2 NVMe slots (M-key) |
| Fans | Up to 8 heavy duty fans with optimal fan speed control |
| Liquid Cooling | Direct to Chip (D2C) Cold Plate (optional) |
| Environmental Spec. | Operating Temperature: 10°C to 35°C (50°F to 95°F) Non-operating Temperature: -40°C to 60°C (-40°F to 140°F) Operating Relative Humidity: 8% to 90% (non-condensing) Non-operating Relative Humidity: 5% to 95% (non-condensing) |
Compare configurations
Supermicro SYS-421GE-TNRT3: 4U Rackmount ai server. Compare processor, memory and expansion requirements; request a configured-system quote.
These specifications describe platform support and expansion options. They do not mean that maximum memory, processors, drives or expansion cards are installed. Review the configured bill of materials for each system.
| Selection criteria | This modelSYS-421GE-TNRT3Supermicro SYS-421GE-TNRT3Request configuration for SYS-421GE-TNRT3 | Compare modelSYS-421GE-NBRT-LCCSupermicro SYS-421GE-NBRT-LCCRequest configuration for SYS-421GE-NBRT-LCC | Compare modelSYS-421GE-TNHR2-LCCSupermicro SYS-421GE-TNHR2-LCCRequest configuration for SYS-421GE-TNHR2-LCC |
|---|---|---|---|
| Processor support | Dual Socket E (LGA-4677) 5th Gen Intel® Xeon® / 4th Gen Intel® Xeon® Scalable processors | Dual Socket E (LGA-4677) 5th Gen Intel® Xeon® / 4th Gen Intel® Xeon® Scalable processors | Dual Socket E (LGA-4677) 5th Gen Intel® Xeon® / 4th Gen Intel® Xeon® Scalable processors |
| Memory support | Slot Count: 32 DIMM slots Max Memory (1DPC): Up to 4TB 5600MT/s ECC DDR5 RDIMM Max Memory (2DPC): Up to 8TB 4400MT/s ECC DDR5 RDIMM | Slot Count: 32 DIMM slots Max Memory (1DPC): Up to 4TB 5600MT/s ECC DDR5 RDIMM Max Memory (2DPC): Up to 8TB 4400MT/s ECC DDR5 RDIMM | Slot Count: 32 DIMM slots Max Memory (1DPC): Up to 4TB 5600MT/s ECC DDR5 RDIMM Max Memory (2DPC): Up to 8TB 4400MT/s ECC DDR5 RDIMM |
| Network connectivity | 2 RJ45 10GbE with Intel® X710-AT2 | 2 RJ45 10GbE with Intel® X710-AT2 | 2 RJ45 10GbE with Intel® X710-AT2 |
| Form factor | 4U Rackmount | 4U Rackmount | 4U Rackmount |
| Expansion slots | Default 8 PCIe 5.0 x16 FHFL slots | Default 8 PCIe 5.0 x16 LP slots 2 PCIe 5.0 x16 FHHL slots | Default 8 PCIe 5.0 x16 LP slots 2 PCIe 5.0 x16 FHHL slots Option A 8 PCIe 4.0 x16 LP slots 4 PCIe 5.0 x16 FHHL slots |
| Drive bays | Default: Total 12 bays 4 front hot-swap 2.5" NVMe drive bays 8 front hot-swap 2.5" SATA drive bays | Default: Total 8 bays 8 front hot-swap 2.5" NVMe drive bays | Default: Total 8 bays 8 front hot-swap 2.5" NVMe drive bays |
Other catalog models are shown for selection planning. A shared family or form factor does not confirm component interchangeability. Check the complete P/N, system revision, firmware and requested configuration before ordering.
Model selection & order planning
Supermicro SYS-421GE-TNRT3
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