TLDR: AMD Zen 4 is a cutting-edge microarchitecture introduced by AMD in 2022 as the foundation for the Ryzen 7000 series processors and EPYC server chips. Built on a 5 nm process, it delivers significant performance improvements, enhanced energy efficiency, and support for modern features like DDR5 memory and PCIe 5.0. Zen 4 continues AMD's tradition of innovation, targeting high-performance computing, gaming, and professional workloads.
https://en.wikipedia.org/wiki/Zen_4
Zen 4 achieves up to a 13% increase in instruction per cycle (IPC) compared to its predecessor, Zen 3, thanks to architectural enhancements such as improved branch prediction, larger caches, and optimized execution units. It introduces support for AVX-512 instructions, significantly boosting performance in workloads like machine learning and data analytics. Additionally, Zen 4 processors feature integrated graphics based on RDNA 2, catering to users who require capable GPUs for entry-level graphics tasks.
https://www.amd.com/en/products/zen-4-architecture
The AMD Zen 4 architecture is designed to future-proof systems by supporting DDR5 memory and PCIe 5.0, enabling higher bandwidth for next-generation storage devices and GPUs. Enhanced power management and a smaller process node contribute to better thermal performance and energy efficiency, making it ideal for both desktop and data center environments. With its balanced approach to performance, efficiency, and scalability, Zen 4 solidifies AMD’s position as a leader in high-performance computing.