here!
I’m your shopping assistant for PC builds, upgrades, and everything tech.
Got questions? Ask away!
Start a conversation
SUPERMICRO SYS-420GU-TNXR 4U Rackmount Server Barebone LGA 4189 DDR4 3200
- Dual Socket P+ (LGA-4189) 3rd Gen Intel Xeon Scalable Processors
- Intel C621A Chipset
- 32 DIMM Slots Up to 8TB DRAM 3200/2933/2666 ECC DDR4 LRDIMM; RDIMM
- 4U system with NVIDIA HGX A100 4-GPU
- 6 PCIe Gen 4.0 X16 LP Slots
- Highest GPU communication using NVIDIA NVLINK
- Supports HGX A100 4-GPU 40GB (HBM2) or 80GB (HBM2e)
- Flexible networking options
- 1 M.2 NVMe/SATA via Intel C621A PCH chipset (for boot drive only)
- Up to 10x 2.5" Hot-swap NVMe/SATA drive bays
- 5 Hot-Swap Heavy Duty Fans with Optimal Fan Speed Control
- 4x 3000W redundant Titanium level power supplies
+
+
Learn more about the Supermicro SYS-420GU-TNXR
| Brand | SUPERMICRO |
|---|---|
| Model | SYS-420GU-TNXR |
| Form Factor | 4U Rackmount |
| Workload | AI/ML/HPC |
| CPU Type | Intel Xeon |
|---|---|
| CPU Socket | LGA 4189 |
| Installed CPU | No CPU Installed |
| Max Processors | 2 |
| CPU Features | Up to 40C/80T; Up to 60MB Cache per CPU Supports up to 270W TDP CPUs (Air Cooled) |
| Memory Slots | 32 x 288Pin |
|---|---|
| Installed Memory Size | No Memory Installed |
| Max Memory Supported | Up to 8TB: 32 x 256 GB DRAM |
| Memory Type Supported | DDR4 3200 |
| ECC Supported | Yes |
| Installed HDD | No Storage Installed |
|---|---|
| M.2 | 1 x M.2 NVMe OR 1 x M.2 SATA3 |
| GPU/VPU | Max GPU Count: 4 onboard GPU(s) Supported GPU: NVIDIA SXM: HGX A100 4-GPU (80GB) CPU-GPU Interconnect: PCIe 4.0 x16 CPU-to-GPU Interconnect GPU-GPU Interconnect: NVIDIA NVLink |
|---|
| PCI Express | 6 x PCIe 4.0 x16 LP slot(s) |
|---|
| First LAN | Intel X710 |
|---|---|
| Max. LAN Speed | 10 Gigabit |
| Hot-Swap Bays | 10 x 2.5" hot-swap NVMe/SATA drive bays (10 x 2.5" NVMe hybrid) |
|---|
| VGA | 1 |
|---|---|
| RJ45 | 2 |
| Max. Power | 4x 3000W Redundant Titanium Level power supplies |
|---|
| Temperature | Operating Temperature: 10°C ~ 35°C (50°F ~ 95°F) Non-operating Temperature: -40°C to 60°C (-40°F to 140°F) |
|---|---|
| Humidity | Operating Relative Humidity: 8% to 90% (non-condensing) Non-operating Relative Humidity: 5% to 95% (non-condensing) |
| Features | Cryptographically Signed Firmware Secure Boot Secure Firmware Updates Automatic Firmware Recovery Supply Chain Security: Remote Attestation Runtime BMC Protections System Lockdown |
|---|
| Dimensions | 7" x 17.67" x 32.79" |
|---|---|
| Weight | 105 lbs. |
| First Listed on Newegg | November 03, 2023 |
|---|
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 1 year
- Limited Warranty period (labor): 3 years
- Read full details
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
- This item is covered by Newegg.com's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-408-503-8000
- Support Website
- View other products from Supermicro
LOADING...
The SUPERMICRO SYS-420GU-TNXR is a 4U barebone server built around an NVIDIA HGX A100 4-GPU platform, suited to organizations building AI/ML or HPC systems that need multi-GPU performance and NVLink communication. CPUs, memory, and storage are not included.
Recommended For
- AI and deep-learning teams training workloads that can use four HGX A100 GPUs together and benefit from GPU-to-GPU NVLink communication.
- HPC teams running GPU-heavy scientific or engineering workloads in a rack-based compute environment.
- Research and enterprise infrastructure teams that need a multi-GPU node with dual Xeon processors and support for large ECC memory configurations.
- System integrators building a custom GPU server who can source and install compatible processors, memory, and storage; this listing is a barebone system rather than a ready-to-run server.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | AI/ML and HPC workloads requiring a 4U rackmount barebone platform with support for up to two Intel Xeon processors and four GPUs |
| Processor And Socket | Supports up to two Intel Xeon processors on LGA 4189, with up to 40 cores and 80 threads and up to 60 MB cache per CPU; CPUs are not installed. Supports air-cooled CPUs up to 270 W TDP |
| Memory Configuration | 32 × 288-pin slots support up to 8 TB of ECC DDR4-3200 memory; memory is not installed |
| GPU And Interconnect | Supports up to four NVIDIA SXM HGX A100 GPUs (80 GB); PCIe 4.0 x16 CPU-to-GPU interconnect and NVIDIA NVLink GPU-to-GPU interconnect |
| Storage And Expansion | 10 hot-swap 2.5-inch NVMe/SATA hybrid bays and one M.2 slot for NVMe or SATA3; no storage is installed. Includes six PCIe 4.0 x16 low-profile slots |
| Networking And System I/O | Intel X710 LAN with speeds up to 10 Gigabit, two RJ45 ports, and one VGA port |
| Security And Firmware | Cryptographically signed firmware, Secure Boot, secure firmware updates, automatic firmware recovery, remote attestation, runtime BMC protections, and system lockdown |
| Power | Four redundant 3000 W Titanium-level power supplies |
| Environmental Specifications | Operating temperature: 10°C to 35°C; non-operating temperature: −40°C to 60°C. Operating relative humidity: 8% to 90% non-condensing; non-operating relative humidity: 5% to 95% non-condensing |
| Dimensions And Weight | 7 × 17.67 × 32.79 inches; 105 lb |
| Model Identifiers | SUPERMICRO SYS-420GU-TNXR |