AMD EPYC 9455 Server Processor | 48-Core 96-Thread, 4nm, 4.4GHz Boost, DDR5 Support for Data Centers

AMD EPYC 9455 Server Processor | 48-Core 96-Thread, 4nm, 4.4GHz Boost, DDR5 Support for Data Centers

In the fast-paced world of data centers, where AI-driven workloads, real-time analytics, and business-critical applications demand unprecedented performance and reliability, the AMD EPYC™ 9455 Server Processor stands out as a game-changing solution. Released in October 2024 as part of the EPYC 9005 series (based on AMD’s cutting-edge Turin architecture), this 4nm server CPU is engineered to meet the growing demands of modern data centers, offering a perfect balance of core count, clock speed, cache, and connectivity. Whether you’re running high-density virtualization, complex CAE/CFD simulations, enterprise resource management (ERM) tools, or AI inference workloads, the EPYC 9455 delivers the power and efficiency needed to drive innovation and reduce operational costs.

Unmatched Core Performance & Multitasking Capabilities

At the heart of the AMD EPYC™ 9455 lies a 48-core, 96-thread design, built on TSMC’s 4nm fabrication process—a leap forward in semiconductor technology that balances performance and power efficiency. Each core operates at a base clock of 3.15GHz, with an all-core boost speed of 4.1GHz and a maximum single-core boost of up to 4.4GHz. This combination of high core count and impressive clock speeds ensures that the EPYC 9455 excels at both parallel workloads (such as AI training, big data analytics, and virtual desktop infrastructure) and single-threaded tasks (like database queries and application hosting), making it one of the most versatile server processors on the market.

The 48 cores are organized to maximize throughput, leveraging AMD’s Zen 5 (Turin) architecture to deliver up to 20% higher performance per core compared to previous-generation EPYC processors. This performance boost translates directly to faster application response times, reduced latency, and the ability to handle more concurrent users and workloads—critical for data centers looking to scale without compromising on user experience. With 96 threads (thanks to AMD’s Simultaneous Multithreading technology), the EPYC 9455 can efficiently handle multiple tasks simultaneously, minimizing bottlenecks and ensuring that every core is utilized to its full potential.

Exceptional Cache & Memory Performance

To complement its powerful core design, the AMD EPYC™ 9455 features a massive 256MB of L3 cache, paired with 80KB of L1 cache and 1MB of L2 cache per core. This hierarchical cache system is optimized to reduce memory latency, ensuring that frequently accessed data is readily available to the CPU cores—eliminating bottlenecks that can slow down data-intensive workloads. The 256MB L3 cache is particularly critical for AI, machine learning, and big data analytics, where large datasets need to be processed quickly and efficiently.

When it comes to memory, the EPYC 9455 supports DDR5 memory technology, with 12 memory channels and a maximum memory bandwidth of 614 GB/s (per socket) at speeds up to 6400 MT/s. This high memory bandwidth ensures that the CPU can quickly access and process large volumes of data, making it ideal for memory-intensive workloads like in-memory databases, real-time analytics, and virtualization. Additionally, the EPYC 9455 supports ECC memory, which provides error correction to ensure data integrity—a must for business-critical applications where even a small data error can have significant consequences. With a maximum memory capacity of up to 6TB per socket, the EPYC 9455 can easily handle the most demanding memory requirements of modern data centers.

Advanced Connectivity & Scalability

Connectivity is a cornerstone of modern server processors, and the AMD EPYC™ 9455 does not disappoint. It features 128 PCIe 5.0 lanes, delivering exceptional I/O bandwidth for high-speed storage, networking, and accelerators (such as GPUs and FPGAs). PCIe 5.0 offers twice the bandwidth of PCIe 4.0, enabling faster data transfer between the CPU and peripheral devices—critical for AI workloads that rely on accelerators, as well as high-performance storage solutions like NVMe SSDs.

The EPYC 9455 is designed for scalability, supporting 1P (single-processor) and 2P (dual-processor) configurations. This scalability allows data centers to start small and expand as their needs grow, without having to replace existing hardware. Whether you’re building a small server cluster for a mid-sized business or a large-scale data center for an enterprise, the EPYC 9455 can adapt to your requirements. Additionally, the processor uses the AMD Socket SP5, ensuring compatibility with a wide range of server motherboards and chassis—providing flexibility in hardware selection and deployment.

Power Efficiency & Cost Savings

Despite its impressive performance, the AMD EPYC™ 9455 is engineered for power efficiency, with a default TDP of 300W and AMD’s Configurable TDP (cTDP) range of 240-300W. This allows data center administrators to adjust the power consumption of the processor based on workload demands, balancing performance and energy efficiency. The 4nm fabrication process plays a key role in this efficiency, reducing power consumption while maintaining high performance—helping data centers lower their energy bills and reduce their carbon footprint.

For businesses, the EPYC 9455’s efficiency translates to significant cost savings over time. Lower power consumption means reduced energy costs, while its high performance and scalability mean fewer servers are needed to handle the same workload—reducing hardware, cooling, and maintenance costs. Additionally, the EPYC 9455’s 1KU pricing of $4959 offers excellent value for money compared to competing server processors, making it an cost-effective choice for data centers of all sizes.

Supported Technologies & Workload Affinity

The AMD EPYC™ 9455 comes equipped with a range of advanced technologies designed to enhance security, performance, and manageability. AMD Infinity Guard provides robust security features, including secure memory encryption, secure boot, and runtime integrity checking—protecting sensitive data from unauthorized access and tampering. AMD Infinity Architecture ensures seamless communication between cores, cache, and memory, maximizing performance and reducing latency.

The EPYC 9455 is optimized for a wide range of workloads, including analytics, application development and testing, CAE/CFD/FEA simulations, ERM/SCM/CRM applications, high-capacity data management (NoSQL and relational databases), VDI (Virtual Desktop Infrastructure), and virtual machine (VM) density. This versatility makes it an ideal choice for data centers that handle diverse workloads, eliminating the need for multiple specialized processors. Whether you’re running AI inference, hosting virtual desktops, or managing large databases, the EPYC 9455 delivers consistent, reliable performance.

Global Availability & Support

The AMD EPYC™ 9455 is available globally, including in regions such as North America, EMEA, APJ, China, and Latin America, ensuring that businesses around the world can access this high-performance server processor. AMD provides comprehensive support for the EPYC 9455, including developer resources, technical documentation, and selector tools to help businesses choose the right processor for their needs. Additionally, AMD’s network of partners offers a wide range of server solutions built around the EPYC 9455, making it easy to deploy and integrate into existing data center infrastructure.

Why Choose the AMD EPYC™ 9455 for Your Data Center?

In a market flooded with server processors, the AMD EPYC™ 9455 stands out for its exceptional balance of performance, efficiency, scalability, and value. Its 48-core design, high clock speeds, massive cache, and advanced connectivity make it ideal for modern data center workloads, while its power efficiency and cost-effectiveness help businesses reduce operational costs. Whether you’re looking to upgrade your existing data center, build a new one, or scale your operations, the EPYC 9455 delivers the performance and reliability you need to stay ahead in today’s competitive landscape.

With its support for the latest technologies (DDR5, PCIe 5.0, AMD Infinity Guard), global availability, and comprehensive support, the AMD EPYC™ 9455 is more than just a server processor—it’s a long-term investment in your data center’s success. Whether you’re a small business, a mid-sized enterprise, or a large corporation, the EPYC 9455 has the power and flexibility to meet your evolving needs, ensuring that your data center remains efficient, secure, and competitive for years to come.

Recommended Motherboards for AMD EPYC 9005/9004 SP5 processors

5th Gen AMD EPYC Server CPUs Model Specifications