Which PCIe version consists of the largest data transfer rate?

PCIe 5.0 features the largest data transfer rate among the listed versions, providing a significant advancement over previous iterations. It offers a maximum throughput of approximately 32 GT/s (giga-transfers per second) per lane, which equates to around 4 GB/s of actual data transfer rate per lane in each direction. This enhanced speed supports the increasing demands of modern applications, including high-performance computing, machine learning, and data-intensive tasks.

In contrast, PCIe 4.0 has a maximum throughput of approximately 16 GT/s per lane, PCIe 3.0 reaches about 8 GT/s, and PCIe 2.0 offers around 5 GT/s. The evolution of PCIe standards directly correlates with the growing need for higher speeds to accommodate advancements in technology and data processing capabilities.