Wait a second I dont think even the Bandwidth of the Current PCI-E is fully Utilized..Or am i wrong ?
Rest here :http://www.theinquirer.net/default.aspx?article=36276
WE'VE SEEN SOME PCIe 1.1 specifications in the wild but we wanted to sniff around to see what is going on with the PCIe 2.0 specification. PCIe 1.1 is a minor improvement but the 2.0 should offer plenty more than the current PCI 1.0 specification.
PCIe 2.0 will provide faster signalling which doubles the bit rate from 2.5GT/s to 5GT/s. It simply means more bandwidth. Maybe someone could tell us what GT/s stands for