
ASUS RS520A-E12 AMD EPYC 9004 Series SP5 2U 24 Bay OCP Barebone Server (1600W PSU)
ASUS RS520A-E12-RS24U Barebone AMD EPYC SP5 Server, OCP3.0, 2U Rackmount, 16x NVMe + 8 SAS/SATA Hot-Swap Bays
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RS520A-E12-RS24U AMD EPYC™ 9004 Single-Processor 2U Barebone Server from ASUS

High-Performance Enterprise Server The ASUS RS520A server is a high-performance two-rack unit server powered by the AMD EPYC™ 9004 Series Processor with 128 Zen 4c cores, providing support for a maximum TDP of 400 watts. It offers impressive memory capabilities with twelve-channel DDR5 memory running at up to 4800 MHz. The server boasts exceptional storage scalability, accommodating up to twenty-four all-flash NVMe drives on the front panel and two additional drives in the rear. With PCIe 5.0 and OCP 3.0 support, it provides powerful expansion options and flexible connectivity capabilities. The server incorporates an air cooling solution for optimised power efficiency, making it exceptionally well-suited for high-performance computing workloads. Enhanced IT infrastructure management is facilitated through the ASUS iKVM remote control and ASUS Control Center software, ensuring robust and comprehensive system monitoring and management.
LGA 60961x Socket SP5
AMD EPYC™ 9004 SeriesProcessor
2UForm Factor
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AMD EPYC™ 9004 Series Processors

Record-Breaking PerformanceThe AMD EPYC 9004 Series CPUs feature 5nm technology, supporting DDR5 memory and PCIe Gen 5 I/O. With 12 memory channels and 2 DIMMs/channel capability, these processors deliver exceptional performance for memory-intensive workloads like AI, ML, HPC, and large in-memory computations.
Up to 1.152 GB L3 Cache with AMD 3D V-Cache technology
  128 PCIe5 lanes in a 1 socket server
Up to 128 cores on Zen 4c
Faster Storage and Networking Capabilities
PCIe 5.0 ReadyPCI Express 5.0 (PCIe 5.0) represents a significant advancement in data transfer technology, offering a bandwidth of 32 GT/s, which doubles the speed of its predecessor, PCIe 4.0. This new standard not only provides increased performance but also brings improvements in power efficiency and land scalability. Importantly, PCIe 5.0 maintains backward compatibility with earlier versions, ensuring seamless integration with existing hardware. To meet the growing demands of modern data centres, some server manufacturers have already adopted PCIe 5.0 technology, designing their systems with scalability in mind to handle increasingly complex workloads.

* The 24 NVMe configuration will not support any GPU.
* Slot 1-4 in rear panel will not be available with 24 NVMe configuration SKU.


1+1 1200W/1600W 80 PLUS Platinum RPSU
1+1 1600W 80 PLUS Titanium RPSU
*Slot 1-4 in rear panel will not be available with 24 NVMe configuration SKU.
Scalable Storage Solution
data centre flexibilityThe server offers scalable storage solutions designed to maximise performance and provide data centre flexibility. By utilising Broadcom Tri-Mode RAID adapters, the server enables comprehensive connectivity through industry-standard interfaces including SAS, SATA, and NVMe, which enhances connectivity and security. These adapters support multiple device types, allowing for flexible system designs that can accommodate various storage technologies and meet diverse enterprise storage requirements.

RS520A-E12-RS24U
24 x NVMe
16 x NVMe + 8 x SATA/SAS (from RAID card)
12 x NVMe + 12 x SATA/SAS
8 x NVMe + 16 x SATA/SAS
* The 24 NVMe configuration will not support any GPU.
* SAS support only from optional SAS HBA/RAID card.
World Record Leadership
top performanceASUS leads server performance with record-breaking results in SPEC CPU 2017 benchmarks for dual-socket and single-socket configurations. These top-tier performance metrics offer customers critical insights into compute-intensive workloads, enabling them to reduce system complexity, tackle challenging computational tasks, and accelerate server validation processes more efficiently.
Computing PerformanceASUS servers incorporate Performance Boost technology, a feature designed to optimise server performance and adaptability. This technology fine-tunes servers to meet specific workload requirements, enhancing user control over their server environment. By maximising processor frequency and boost power, Performance Boost improves workload throughput, making it particularly beneficial for time-critical applications in sectors such as financial services and data centre operations.

Core OptimizerMaximises the processor frequency in multi-core operations, avoiding frequency shifting for reduced latency.

Engine BoostAutomatic power acceleration with an innovative voltage design to increase overall server performance.

Workload PresetsPreconfigured BIOS server profiles based on workloads and benchmarks for improved performance and efficiency.
Power EfficiencyASUS servers have achieved top rankings in the SPEC Power benchmark, highlighting their exceptional energy efficiency and performance. By delivering high-performance systems that minimise power consumption, ASUS enables customers to deploy faster, more sustainable IT infrastructure with reduced operational costs and environmental impact.

ASUS Power BalancerAutomatically adjust overall loading based on real-time monitoring to decrease overall power consumption for improved efficiency, cost & performance.

Thermal Radar 2.0Features intelligent fan-curve adjustments to fit real-time usage patterns and lower fan power consumption.
Server Management Solution

Remote Server Management ASUS ASMB11-iKVM, the latest server management solution, utilises the ASPEED 2600 chipset and AMI MegaRAC SP-X. It offers out-of-band server management through various interfaces, including WebGUI and Intelligent Platform Management Interface, enhancing remote server control and monitoring capabilities.

Streamline IT Operations via a Single Dashboard ASUS Control Center (ACC) is a comprehensive IT management solution that enables remote monitoring and control of hardware and software assets. It provides real-time visibility, facilitates BIOS updates, streamlines diagnostics, and enhances security through centralised management of IT infrastructure across multiple systems.
Enhanced Security
Hardware Root-of-Trust Solution ASUS servers incorporate PFR FPGA as a Root-of-Trust solution, enhancing firmware resilience against unauthorised access. This security measure aligns with the NIST SP 800-193 specification, providing robust protection for IT infrastructure and ensuring compliance with industry standards.
Trusted Platform Module 2.0 ASUS servers incorporate Trusted Platform Module 2.0 (TPM 2.0) technology, enhancing hardware security through integrated cryptographic keys. This feature enables regular firmware updates to address vulnerabilities, bolstering the overall protection of the server infrastructure.