ASUS RS501A-E12-RS4U 1U Server: Supports 1x AMD EPYC 9005 CPU, 24x DDR5 DIMMs (Up to 3TB), 4x NVMe, 3x PCIe 5.0 Slots, and OCP 3.0

ASUS RS501A-E12-RS4U: 1U Single-Socket Server with AMD EPYC 9005 Processor

Product Overview

The ASUS RS501A-E12-RS4U is a powerful and versatile 1U rack server designed for modern data center workloads, featuring a single AMD EPYC 9005 Series processor. As a single-socket platform, this server delivers exceptional compute performance for applications such as virtualization, database management, AI inference, and high-performance computing. The compact 1U form factor enables high-density deployment while maintaining enterprise-grade reliability and scalability.

Built on the AMD SP5 platform, the RS501A-E12-RS4U supports the latest 5th Gen EPYC processors with up to 192 Zen 5c cores and AMD 3D V-Cache technology, making it an ideal choice for compute-intensive operations and demanding enterprise environments.

Key Performance Capabilities

Next-Generation AMD EPYC 9005 Processor Architecture

The RS501A-E12-RS4U harnesses the power of AMD's latest processor technology:

• Single AMD EPYC 9005 Series processor (SP5 socket, LGA 6096) – also compatible with EPYC 9004 Series

• Up to 192 Zen 5c cores for exceptional multi-threaded performance

• Max TDP: Up to 450W (supports 400W at 35°C ambient, 360W standard configuration)

• AMD 3D V-Cache technology support for enhanced cache performance

High-Performance DDR5 Memory

The RS501A-E12-RS4U features an industry-leading memory architecture:

Flexible Storage Configuration

The RS501A-E12-RS4U offers versatile storage options tailored for high-speed data access:

PCIe 5.0 Expansion

The RS501A-E12-RS4U provides extensive I/O expansion with PCIe 5.0 architecture (32 GT/s – 2x bandwidth over PCIe 4.0):

GPU Acceleration Support

• Up to 2 single-slot GPU cards for AI inference and compute acceleration

Networking

I/O Ports

Graphics and Management

• Integrated Graphics: ASPEED AST2600 with 64MB VRAM

• Remote Management: ASUS ASMB11-iKVM (BMC) for KVM-over-IP

• Management Software: ASUS Control Center (in-band management)

• Security: Optional TPM module, optional PFR (Platform Firmware Resilience) module

Cooling and Power

The RS501A-E12-RS4U is engineered for continuous operation with optimized thermal management:

• Cooling: Enhanced Volume Air Cooling (EVAC) heatsink design supports processors up to 450W TDP

• Power Supplies: 1+1 redundant hot-swap PSUs

• Power Options:

  • 1200W 80 PLUS Platinum (1+1 redundant)

  • 1600W 80 PLUS Titanium (1+1 redundant)

• Redundancy: Complete power supply redundancy for high-availability deployments

Physical Specifications

Operating Environment

Enterprise-Grade Management & Security

ASUS ASMB11-iKVM

The RS501A-E12-RS4U features the ASMB11-iKVM module powered by ASPEED AST2600, providing comprehensive out-of-band remote management :

• KVM-over-IP: Full remote control regardless of OS state

• Virtual Media: Remote mounting of ISO images

• Redfish API Support: For automated data center management

• Dedicated Management LAN: Isolated management network

ASUS Control Center

Centralized management software for multiple servers, offering :

• Real-time hardware monitoring

• Remote BIOS configuration

• Proactive alerting and fault detection

• Simplified maintenance and deployment

Security Features

The RS501A-E12-RS4U provides comprehensive security capabilities:

• TPM Module: Optional Trusted Platform Module for hardware-rooted security

• PFR Module: Optional Platform Firmware Resilience for additional firmware protection

• Root-of-Trust: Hardware-level security foundation

OS Support

The server supports a wide range of operating systems :

• Red Hat Enterprise Linux

• SUSE Linux Enterprise Server

• CentOS

• Ubuntu (certified with Ubuntu 24.04 LTS)

• VMware

Detailed Technical Specifications

Key Applications

Virtualization and Cloud Infrastructure

With 24 DDR5 DIMM slots supporting up to 3TB of memory and up to 192 cores, the RS501A-E12-RS4U delivers exceptional virtual machine density for private and public cloud deployments. The single-socket design reduces software licensing costs while maintaining high performance.

High-Performance Computing (HPC)

The 12-channel DDR5 memory architecture (up to 6400MHz) and PCIe 5.0 expansion enable high-bandwidth data movement for scientific simulations, genomic research, and computational chemistry workloads.

AI Inference and Machine Learning

Support for up to two single-slot GPUs combined with EPYC 9005's 192 cores makes this server ideal for AI inference workloads at the edge or in data centers. The PCIe 5.0 slots provide ample bandwidth for GPU accelerators.

Database Management

The combination of high core count, large memory capacity (3TB), and high-speed memory (6400MHz) enables in-memory database deployments and high-performance transaction processing systems.

Edge Computing

The compact 1U form factor, wide operating temperature range (10-35°C), and efficient cooling design make this server suitable for edge data center and MEC (Multi-Access Edge Computing) deployments.

Why Choose ASUS RS501A-E12-RS4U?

Conclusion

The ASUS RS501A-E12-RS4U represents a significant advancement in 1U single-socket server design, combining AMD EPYC 9005 processors (up to 192 cores) with 24 DDR5 DIMM slots (up to 3TB at 6400MHz), PCIe 5.0 expansion, and flexible storage options (4 NVMe + 2 M.2) in a compact form factor.

With support for up to two single-slot GPUs, EVAC cooling for processors up to 450W TDP, enterprise-grade management (ASMB11-iKVM with AST2600), and 1+1 redundant Titanium/Platinum power supplies, this server delivers exceptional performance, reliability, and efficiency for virtualization, HPC, AI inference, database, and edge computing workloads.

Backed by ASUS's comprehensive management suite (ASUS Control Center, Redfish API), security options (TPM, PFR), and Ubuntu certification, the RS501A-E12-RS4U is the ideal choice for organizations seeking a powerful, cost-effective, and future-proof 1U server platform for modern data center and enterprise environments.