100-000001542 AMD EPYC 9455 3.15GHz 48-Core Processor

Comprehensive Product Description

Product Overview

• Product Type: Server Processor
• Product Manufacturer: Advanced Micro Devices Inc. (AMD)
• Product Model: 9455
• Manufacturer Part Number (MPN): 100-000001542
• Form Factor: Enterprise-grade processor suitable for high-performance servers

Technical Specifications

• Processor Core: 48 cores optimized for high-throughput workloads
• Thread Count: 96 threads enabling advanced multitasking and virtualization
• Base Clock Speed: 3.15 GHz
• Maximum Boost Clock: Up to 4.4 GHz for demanding computational tasks
• Cache Memory: 256 MB L3 cache for accelerated data access
• PCI Express Version: PCIe 5.0 ×128 lanes for high-speed expansion and connectivity
• Memory Type: DDR5 providing ultra-fast data throughput
• Memory Channels: 12-channel architecture for parallel data transfers
• Maximum Memory Speed: Up to 6000 MT/s
• Per Socket Memory Bandwidth: 576 GB/s for high-performance workloads
• Thermal Design Power (TDP): 300W, designed for energy-efficient high-density deployments
• Socket Compatibility: SP5 for modern server platforms

Performance and Core Configuration

High-Density Multicore Architecture

• 48 Cores: Provides massive parallel processing capabilities
• 96 Threads: Simultaneous multithreading enables efficient resource utilization

Clock Speeds and Boost Technology

• Base Frequency: 3.15 GHz for reliable day-to-day server operations
• Max Boost: Up to 4.4 GHz for peak workload performance

Memory Support and Bandwidth

DDR5 High-Speed Memory

• Memory Channels: 12 channels for optimized parallel data transfers
• Memory Speed: Up to 6000 MT/s for latency-sensitive applications
• Memory Bandwidth: 576 GB/s delivering rapid access for heavy workloads

PCIe Connectivity and Expansion

PCIe 5.0 Interface

• High-Speed Expansion: 128 lanes of PCIe 5.0 for GPUs, NVMe storage, and networking devices
• Flexible Configuration: Supports modern server expansion requirements

Power Efficiency and Thermal Management

• TDP: 300W providing a balance between performance and energy efficiency
• Optimized Cooling: Designed for stable operation in dense server environments

Key Features and Architecture

• Zen Architecture: Built on AMD Zen 4 for enhanced performance per watt
• Security Features: Advanced hardware security including Memory Guard and Secure Encrypted Virtualization (SEV)
• Workload Affinity: Suitable for AI, HPC, virtualization, analytics, and high-performance enterprise applications

AMD EPYC 9455 3.15GHz 48-Core Processor: Enterprise-Class Compute for Demanding Workloads

The AMD 100-000001542 EPYC 9455 3.15GHz 48-Core Processor is a high-performance server-grade CPU designed for modern data centers, cloud infrastructure, and high-performance computing environments. As part of AMD’s 5th Gen EPYC 9004 series, this processor leverages the Zen 4 architecture and advanced 5nm process technology to deliver exceptional compute density, energy efficiency, and scalability. With 48 cores and 96 threads, the EPYC 9455 is optimized for multi-threaded workloads, virtualization, AI/ML training, and enterprise-grade applications requiring robust parallelism and memory bandwidth.

Zen 4 Architecture: Engineered for Efficiency and Throughput

Microarchitecture Enhancements

The Zen 4 architecture introduces significant improvements in IPC (Instructions Per Cycle), branch prediction, and execution pipeline efficiency. These enhancements result in faster data processing, reduced latency, and improved performance across a wide range of workloads. The EPYC 9455 benefits from these architectural upgrades, offering superior performance in both single-threaded and multi-threaded environments.

Core and Thread Configuration

Featuring 48 physical cores and 96 threads via simultaneous multithreading (SMT), the EPYC 9455 is built for parallelism. This configuration is ideal for virtualized environments, container orchestration, and multi-tenant workloads. The processor’s core layout ensures efficient thread scheduling and minimal contention, even under sustained load.

Base and Boost Clock Speeds

Operating at a base frequency of 3.15GHz, the EPYC 9455 delivers consistent high-speed performance across a wide range of applications. The processor supports dynamic frequency scaling, allowing it to boost under load conditions to maximize responsiveness for latency-sensitive tasks such as real-time analytics, financial modeling, and edge processing.

Advanced Cache Hierarchy for Accelerated Data Access

Hierarchical Cache Design

The EPYC 9455 includes a sophisticated cache hierarchy to minimize latency and maximize throughput. Each core includes 1MB of L2 cache, and the processor features a shared 256MB L3 cache. This configuration ensures rapid access to frequently used data, enhancing performance in database operations, web services, and real-time telemetry.

Cache Distribution and Efficiency

The processor’s cache architecture is designed to reduce contention and improve data locality. Dedicated L1 and L2 caches per core allow for fast access to instructions and data, while the shared L3 cache supports inter-core communication and workload balancing. This results in improved performance for multi-threaded applications and reduced bottlenecks in data-intensive tasks.

Memory Support and Bandwidth

DDR5 Memory Compatibility

The EPYC 9455 supports DDR5 memory, offering higher bandwidth and lower power consumption compared to DDR4. With support for up to 12 memory channels, the processor ensures fast and reliable access to system memory, which is critical for workloads involving large datasets and real-time processing.

Maximum Memory Capacity

Supporting up to 6TB of DDR5 ECC memory, the EPYC 9455 is well-suited for enterprise applications, virtualization platforms, and HPC deployments. ECC (Error-Correcting Code) memory enhances system reliability by detecting and correcting memory errors, ensuring data integrity in mission-critical environments.

Memory Speed and Latency Optimization

With support for DDR5-5600 modules, the processor achieves ultra-fast memory transfer rates while maintaining low latency. This configuration is ideal for latency-sensitive applications such as high-frequency trading, real-time telemetry, and AI inference workloads.

PCIe 5.0 Support: High-Speed I/O Expansion

Connectivity and Bandwidth

The EPYC 9455 supports PCIe 5.0, enabling faster communication with GPUs, NVMe storage devices, and high-speed networking cards. This is essential for modern workloads that require rapid data access and transfer, such as AI model training and big data analytics.

Expansion Capabilities

With up to 128 PCIe lanes, the processor offers scalable I/O expansion options. This allows for flexible server configurations with multiple accelerators, storage arrays, and network interfaces, supporting diverse enterprise and HPC applications.

Security and Reliability Features

AMD Infinity Guard

The EPYC 9455 incorporates AMD Infinity Guard, a comprehensive suite of security features designed to protect data, isolate workloads, and ensure system integrity. Key components include Secure Memory Encryption (SME), Secure Encrypted Virtualization (SEV), and Secure Boot.

Secure Memory Encryption (SME)

SME encrypts system memory to prevent unauthorized access, even in the event of physical memory compromise. This is essential for protecting sensitive data in multi-tenant and cloud environments.

Secure Encrypted Virtualization (SEV)

SEV enables encrypted virtual machines, ensuring that guest VMs remain isolated and protected from hypervisor-level threats. This enhances trust and compliance in virtualized infrastructures.

Energy Efficiency and Thermal Management

5nm Process Technology

Manufactured using TSMC’s 5nm process node, the EPYC 9455 achieves high transistor density and improved power efficiency. This contributes to lower thermal output and reduced energy consumption, aligning with sustainability goals and green data center initiatives.

Thermal Design Power (TDP)

With a TDP of 290W, the EPYC 9455 offers a balanced power profile suitable for dense server environments. Advanced thermal management features ensure stable operation under sustained workloads, supporting both air and liquid cooling solutions.

Power Management Technologies

The processor includes dynamic voltage and frequency scaling (DVFS), enabling it to adjust power usage based on workload demands. This minimizes energy waste during idle periods and maximizes performance during peak usage.

Use Cases and Application Scenarios

Cloud-Native Workloads

The EPYC 9455 is optimized for cloud-native environments, including containerized applications, microservices, and Kubernetes clusters. Its core density and energy efficiency make it ideal for hyperscale deployments and edge computing.

Enterprise Virtualization

With support for large memory capacities and advanced virtualization features, the processor enables high VM density and efficient resource allocation. This reduces operational costs and enhances scalability for enterprise IT infrastructures.

High-Performance Computing (HPC)

Scientific research, engineering simulations, and AI model training benefit from the parallel processing capabilities of the EPYC 9455. Its architecture supports floating-point operations and large datasets, making it suitable for HPC clusters and research institutions.

Data Analytics and Machine Learning

The processor’s high core count and memory bandwidth support real-time data analytics and machine learning workloads. It enables rapid processing of large datasets, accelerating insights and decision-making in data-driven organizations.

Platform Compatibility and Ecosystem

Socket SP5 and Motherboard Support

The EPYC 9455 utilizes the SP5 socket, compatible with a wide range of server motherboards. This ensures flexibility in system design and integration, whether for rack-mounted servers, blade systems, or custom builds.

OEM and ISV Certification

AMD partners with leading OEMs and independent software vendors (ISVs) to certify the EPYC 9455 for enterprise applications. This ensures compatibility with popular software stacks and simplifies deployment in production environments.