PCI Express can be broken down to two speed grades specified by the PCI Express Base Specification: Gen1 at 2.5Gbps and Gen2 at 5.0Gbps. This training module will focus on Gen1 speeds of 2.5Gbps. PCI Express operates at a high-speed serial rate of 2.5Gbps and utilizes low-voltage differential signaling to achieve this. Coming from PCI, this new technology doubles the existing theoretical bandwidth of PCI while also utilizing a much lower pin count.

