Mar. 15, 2021 PCIe, or Peripheral Component Interconnect Express which nobody ever says, was an upgrade to the earlier PCI bus. This was developed by Intel and introduced in 1992. It replaced several older, slower buses that had been used in a somewhat ad-hoc fashion in early PCs. It was primarily a 32-bit bus, although the standard allowed for 64-bit. Most importantly, it was a parallel bus. Today, it is only of historical interest and is no longer in active use, so I won't go into any detail. In 2004, a group of Intel engineers formed the Arapaho working group and started to develop a new...