For generations (PCIe 1.0 through 5.0), the specification relied on signaling. NRZ uses two voltage levels (high = 1, low = 0) to transmit one bit per clock cycle.
Doubling data density comes with a trade-off: a higher bit-error rate. To counter this, PCIe 6.0 introduces: 0;16; pci express base specification revision 60 pdf
64 GT/s (Gigatransfers per second) per lane, up from 32 GT/s in PCIe 5.0. Total Bandwidth (x16): Up to 256 GB/s bidirectional (128 GB/s per direction). For generations (PCIe 1
Unlike previous generations that primarily increased clock frequency, PCIe 6.0 introduces three fundamental changes to reach its performance goals: For generations (PCIe 1.0 through 5.0)