ASUS RS520QA-E13-RS8U: 2U 4-Node AMD EPYC 9005 Server

The ASUS RS520QA-E13-RS8U is a high-density 2U rack server featuring four independent single-socket nodes (2U4N architecture), each powered by an AMD EPYC 9005 processor (up to 192 Zen 5c cores, 500W TDP). Designed for HPC, EDA, cloud computing, and memory-intensive workloads, it delivers exceptional compute density (up to 768 cores per 2U) with enterprise-grade reliability.

Per-Node Specifications (4 nodes per chassis)

• Processor: 1x AMD EPYC 9005/9004 (SP5 socket), up to 192 cores, 500W TDP (400W at 35°C ambient)

• Memory: 12 DDR5 DIMM slots (1DPC, 12-channel) at up to 6400MHz; optional CXL module adds 8 DIMMs – total up to 20 DIMMs, 5TB per node (CXL runs at 4400MHz)

• Storage: 2x front hot-swap 2.5" NVMe bays + 2x internal M.2 (Gen4 x4) per node

• Expansion: 1x PCIe 5.0 x16 FHHL + 1x OCP 3.0 (Gen5 x16) per node

• Networking: 1x dedicated management LAN per node; OCP 3.0 supports 10G/25G/100G Ethernet

System-Wide Features

• Cooling: 14x 8080 high-performance fans with custom EVAC heat pipe modules – supports 500W TDP CPUs without liquid cooling

• Power: 2+2 or 1+1 redundant 3200W 80 PLUS Titanium PSUs with independent airflow path

• Management: ASMB12-iKVM (AST2600 BMC) per node, ASUS Control Center, Redfish API

• Security: Hardware-level Root-of-Trust per node

• Maintenance: Front-access design (service without entering hot aisles), tool-less cover and brackets

• Dimensions: 449 x 88.1 x 840 mm (17.68" x 3.47" x 33.07") – standard 2U

• Certifications: BSMI, CB, CE, FCC Class A

Why choose this server?

• Unmatched compute density: 4 independent nodes in 2U – up to 768 cores per rack unit

• Flexible memory architecture: Up to 20 DIMMs per node (12 base + 8 CXL) – 5TB capacity

• CXL memory expansion: Overcomes 2DPC speed limits; delivers ~97% additional memory bandwidth over traditional designs

• High-speed memory: Base DIMMs at 6400MHz for optimal bandwidth

• PCIe 5.0 ready: 2x bandwidth over PCIe 4.0 per node

• Advanced air cooling: Supports 500W TDP CPUs without liquid cooling

• Operational efficiency: Front-access + tool-less maintenance + Titanium PSUs

Ideal for organizations seeking maximum compute density, massive memory capacity (5TB/node), and operational efficiency in modern data center environments – all within a standard 2U chassis.