Main features of this specification include:

Delivering 128 GT/s raw bit rate and up to 512 GB/s bi-directionally via x16 configuration
– Utilizing PAM4 (Pulse Amplitude Modulation with 4 levels) signaling
– Focusing on the channel parameters and reach
– Improving power efficiency
– Continuing to deliver the low-latency and high-reliability targets
– Maintaining backwards compatibility with all previous generations of PCIe technology