EPYC 7643
General Information
Core specifications including model name, series, manufacturer, and market segment. This section provides essential identification details for the processor model.
| Cpu Name | EPYC 7643 |
| Series | AMD EPYC |
| Market segment | Server |
| Designer | AMD |
| Manufacturer | TSMC |
| Release date | 15 March 2021 (4 years ago) |
| Launch price (MSRP) | $4,995 |
Performance & Rankings
Processor evaluation across various parameters, including position in performance rankings, user popularity, and price-to-performance ratio metrics.
| Place in the ranking | 44 |
| Place by popularity | not in top-100 |
| Cost-effectiveness evaluation | 6.82 |
| Power efficiency | 20.16 |
Architecture & Manufacturing
Technical specifications including architecture codename, manufacturing process, die size, and transistor count that define the processor's technological foundation.
| Architecture codename | Milan (2021−2023) |
| Chip lithography | 7 nm+ |
| Die size | 8x 81 mm2 |
| Number of transistors | 33,200 million |
| 64 bit support | + |
Cores & Threads
Information about physical and logical cores that determine the processor's capabilities for parallel computing and multitasking performance.
| Physical cores | 48 (Octatetraconta-Core) |
| Threads | 96 |
| Number of CPUs in a configuration | 2 |
Clock Speeds
Operating frequencies including base and boost clock speeds that directly affect the processor's performance and execution speed.
| Base clock speed | 2.3 GHz |
| Boost clock speed | 3.6 GHz |
| Multiplier | 23 |
Cache Memory
Fast access memory capacity across different levels that significantly impacts data access speed and overall processor performance.
| L1 cache | 64 KB (per core) |
| L2 cache | 512 KB (per core) |
| L3 cache | 256 MB (shared) |
Power & Thermal Characteristics
Heat output and energy consumption information, critical for selecting appropriate cooling systems and power supplies.
| Power consumption (TDP) | 225 Watt |
Memory Support
Specifications for supported RAM, including types, maximum capacity, and bandwidth capabilities.
| Supported memory types | DDR4-3200 |
| Maximum memory size | 4 TiB |
| Maximum memory bandwidth | 204.795 GB/s |
Interfaces & Expansion
Information about available interfaces for connecting peripheral devices and expansion capabilities.
| Socket | SP3 |
| PCIe version | 4 |
| PCI Express lanes | 128 |
Technologies & Instructions
Special instruction sets and technologies that extend the processor's capabilities for specific tasks and performance optimization.
| AES-NI | + |
| AVX | + |
| AMD-V | + |