PCIegenerasjoner

PCIe, or Peripheral Component Interconnect Express, is a high-speed serial computer expansion bus standard. Over time, PCIe has evolved through several generations, each offering significant improvements in speed and capabilities.

PCIe 1.0, introduced in 2003, provided a bandwidth of 2.5 GT/s per lane. It was a significant upgrade from older PCI standards, enabling faster communication between the CPU and peripheral devices.

PCIe 2.0, released in 2007, doubled the per-lane bandwidth to 5 GT/s. This allowed for more demanding graphics cards and other expansion devices.

PCIe 3.0, launched in 2010, further increased efficiency and speed, reaching 8 GT/s per lane. It introduced a more efficient encoding scheme, improving data transfer rates by nearly double compared to PCIe 2.0.

PCIe 4.0, released in 2017, doubled the bandwidth again to 16 GT/s per lane. This generation is crucial for high-performance NVMe SSDs, advanced graphics cards, and networking equipment.

PCIe 5.0, introduced in 2019, offers a per-lane bandwidth of 32 GT/s, doubling the speed of PCIe 4.0. This latest generation supports the most demanding applications, including AI accelerators and cutting-edge data center technologies.

PCIe 6.0, which is currently in development, aims to double the bandwidth again to 64 GT/s per lane, utilizing PAM4 signaling for improved data density. Each generation is backward compatible, meaning newer PCIe devices can function in older slots, albeit at the slower speed of the slot. This backward compatibility ensures a smooth transition and continued usability of existing hardware.