PCI-Express (peripheral component interconnect express) is a high speed serial computer expansion bus standard, its original name is "3GIO", which was proposed by Intel in 2001 to replace the old PCI, PCI-X, and AGP bus standard

PCIe belongs to high speed serial point to point dual channel high bandwidth transmission The connect device allocate exclusive channel bandwidth but do not share bus bandwidth, it mainly supports active power management, error reporting, end to end related transmission, hot plugging and quality of service (QOS) and other functions

After certified and released by PCI-SIG (PCI Special Interest Organization), PCIe was changed its name to "PCI-Express", and: PCI-e "for short It main advantage is the high data transfer rate, and there is consistent development potential

PCI Express also has a variety of specifications, from PCI Express x1 to PCI Express x32, can meet the needs of low speed and high speed device And its new functions can improve data transmission and data protection

The suppliers of PCIe flash memory cards include: INTEL, IBM, LSI, OCZ, Samsung (planning), SanDisk, STEC, SuperTalent and Toshiba (planning), etc PCIe 4.0 is available for 100G and 200G PCIe 5.0 uses up to 400G And in the future PCIe 6.0 will boost it to 800G