PCIe is the standard interface for hard drives, networking cards, and graphics cards. That includes GPU based accelerators. PCI-SIG, the standards body leading the development of the PCIe spec, says it is being designed for workloads like AI/ML, high-speed networking, and edge computing running in hyperscale data centers.
“With the increasing data throughput required in AI and other applications, there remains a strong demand for high performance. PCIe technology will continue to deliver a cost-effective, high-bandwidth, and low-latency I/O interconnect to meet industry needs,” said Al Yanes, PCI-SIG president and chairperson in a statement.
In theory, PCIe Gen8 NVMe SSDs will be rated for sequential speeds of up to 120,000 MB/s. By contrast, a PCIe 6.0 SSD can reach about 28,000 MB/s sequential read in.
Pulse Amplitude Modulation with 4 levels (PAM4) signaling, first added to the PCIe spec in 6.0 as a replacement for non-return-to-zero (NRZ) amplitude, we’ll see further refinement to helpPCIe 8.0 achieve its high transfer rates.
