PCI Express (Peripheral Component Interconnect Express) 5.0 is the fifth generation of the PCI Express standard. It was officially announced by the PCI-SIG (PCI Special Interest Group) in May 2019 and the specification was finalized in May 2020.
PCI Express 5.0 has a bandwidth of 32 GT/s (gigatransfers per second), which is twice that of its predecessor, PCI Express 4.0, and four times that of PCI Express 3.0. This high bandwidth allows for faster data transfer rates, reduced latency, and improved overall system performance.
PCI Express 5.0 is backward compatible with earlier versions of the PCI Express standard, which means that it can be used with devices that support previous versions of the standard. However, to take full advantage of the increased bandwidth of PCI Express 5.0, both the device and the motherboard must support the latest standard.
PCI-SIG has also introduced new features in the PCI Express 5.0 specification, such as Forward Error Correction (FEC) to improve signal integrity and Cyclic Redundancy Check (CRC) for data integrity. These features are intended to improve the reliability of data transfer over the PCI Express interface.
Overall, PCI Express 5.0 is a significant upgrade over its predecessors, and it is expected to be widely adopted in high-performance computing, data center, and gaming applications.