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PCIe,进入光时代
半导体芯闻· 2025-06-30 10:07
Core Viewpoint - The development of Artificial Intelligence (AI) has increased the demand for faster data transmission, which is reflected in the upcoming release of PCI Express 7.0, set for June 11, 2025, targeting data-driven applications such as AI/machine learning, 800G Ethernet, cloud computing, and quantum computing [1][4]. Group 1: PCIe 7.0 Features - PCIe 7.0 will feature a data rate of 128.0G transfers per second (GT/s) and a bidirectional rate of up to 512GB/s in a 16-lane configuration, utilizing PAM4 signaling and Flit-based encoding for improved power efficiency [1][4]. - The new version maintains backward compatibility with previous PCIe generations and continues the tradition of doubling I/O bandwidth every three years [1][4]. Group 2: Market Drivers and Applications - The primary driver for PCIe 7.0 improvements is to meet the bandwidth demands of large-scale data centers, high-performance computing (HPC), and other data-intensive markets adopting AI [4][5]. - The automotive sector is also a focus for PCI-SIG, with expectations that the industry will shift towards PCIe due to performance needs [5]. Group 3: Optical Solutions and Compliance - PCI-SIG has introduced the industry's first standard-based "optical-aware retimer" solution, which standardizes optical PCIe architecture for easier migration to existing PCIe 6.0 designs and devices [5]. - Compliance testing for PCIe 6.0 is ongoing, with a goal to have an integrator list by the end of 2025, while PCIe 8.0 is also in development [6].