Network interface cards (NICs) at 800GbE require roughly 100 GB/s of PCIe bandwidth. PCIe 6.0 x16 comfortably handles this, paving the way for 1.6Tb Ethernet in the future.
Note: Bandwidth calculations are raw theoretical maximums. The spec PDF details the actual payload throughput accounting for FEC overhead.
Anyone speccing out an AI cluster or High-Performance Computing (HPC) solution needs to understand the implications of L0p for power budgeting and FLIT for CXL 3.0 coherency.
This article provides a deep dive into what Revision 6.0 entails, why the official PDF is the definitive source, and how its new features—from PAM4 to FLIT mode—will revolutionize data movement.
64 GT/s (Gigatransfers per second) per lane, up from 32 GT/s in PCIe 5.0. Total Bandwidth (x16): Up to 256 GB/s bidirectional (128 GB/s per direction).