PCIe 3.0 Still Shines While PCIe Keeps Evolving

By Cadence

October 17, 2019

PCIe has been widely adopted in the electronics industry since its first debut in 2003 (PCIe 1.0 standard release) for wide breach of applications, from Data Center Server, Networking, to Mobile, AI/ML, Automotive, IoT, and many others…. It’s a versatile, high-performance, robust, mature interconnect standard with full “backward compatibility” (e.g., a PCIe 3.0 device can still function well in a PCIe 4.0 system) which enables a solid and strong PCIe eco-system in the industry. While the market, so as the users, are enjoying the systems, e.g., desktop/laptop, powered (or to be more specific: “bridged”) by PCIe 3.0 since 2010, the industry is pushing hard for the PCIe 4.0 eco-system enablement. Earlier this year, AMD announced it X570 chipset would support the PCIe 4.0 interface and Phison also introduced the world’s first PCIe 4.0 SSD.

On the standard evolution front, the official PCIe 5.0 came out in May 2019, doubling the data rate to 32GT/s from 16GT/s in PCIe 4.0. The PCIe 6.0 standard will be released in 2021 based on the announcement made by PCI-SIG in June’19 with the goal to further double the data rate to 64GT/s with incorporating the PAM4 coding.

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