ASUS RS521A-E12-RS12U: 2U Single-Socket EPYC 9005 Server
The ASUS RS521A-E12-RS12U is a high-performance 2U rack server designed for storage-intensive workloads, HPC, AI inference, virtualization, and software-defined storage. Powered by an AMD EPYC 9005 processor (up to 192 Zen 5c cores, 400W TDP) with 12-channel DDR5 memory architecture, it delivers exceptional compute density and scalability.
Memory & Storage
DIMMs: 24 DDR5 slots (12 channels, 2 DPC) supporting up to 3TB at 5200MHz
Front Bays: 12x 3.5"/2.5" hot-swap bays (NVMe/SATA/SAS) – up to 12 NVMe drives
Rear Bays: 2x 2.5" hot-swap SATAIII bays
Internal: 2x M.2 sockets (PCIe Gen4 x4, up to 22110)
Total Drives: Up to 16 storage devices
Expansion & I/O
PCIe 5.0: 5 slots (2x FHFL x16 + 3x configurable x8) + 1x OCP 3.0 (Gen5 x16)
GPU Support: Up to 2 dual-slot GPUs (NVIDIA A100, AMD Instinct, etc.)
Networking: Dual 1GbE (Intel I350-AM2) + dedicated management LAN
I/O: 2x USB 3.2 Gen1 front/rear, VGA front/rear
Management & Security
BMC: ASMB11-iKVM (ASPEED AST2600) with KVM-over-IP and Redfish API
Software: ASUS Control Center for centralized management
Security: Hardware Root-of-Trust; optional TPM and PFR modules
Cooling & Power
Cooling: 4x 80x56mm hot-swap fans with air-cooled heatsink
Power: 1+1 redundant hot-swap PSUs (1600W or 2000W, 80 PLUS Titanium)
Efficiency: Lower PUE and optimized TCO
Physical Specifications
Dimensions: 449 x 88.1 x 840 mm (17.68" x 3.47" x 33.07")
Net Weight: 17.95 kg (39.6 lbs)
Why choose this server?
Exceptional core density: 192 cores in 2U – industry-leading single-socket density
Massive memory capacity: 3TB DDR5 at 5200MHz
High storage density: 12 front NVMe + 2 rear SATA + 2 M.2
PCIe 5.0 ready: 2x bandwidth over PCIe 4.0
GPU ready: Supports up to 2 dual-slot accelerators
Enterprise reliability: Redundant Titanium PSUs, hot-swap components
Comprehensive management: ASMB11-iKVM, ASUS Control Center, Redfish API
Ubuntu 24.04 LTS certified with 3-year warranty
Ideal for organizations seeking a powerful, cost-effective, and future-proof 2U server platform for HPC, AI inference, database management, and software-defined storage workloads.
