... maximum transmission speed of up to 5 Gbit/s (625 MB/s), which is more than 10 times as fast ... provides a fourth transfer mode at 5.0 Gbit/s (raw data rate), in addition to the modes ... by earlier versions. The payload throughput is 4 Gbit/s (using 8b/10b encoding), and the specification considers ... reasonable to achieve around 3.2 Gbit/s (0.4 GB/s or 400 MB/s), which should increase with future hardware ...