I'm on a clevo p150em with a 7970m and a Intel 3610qm.
HWINFO64 reports PCIExpress version 1.1 on:
Intel Ivy Bridge DT - PCI Express Graphics root port[E1/L1/N0/P0]
Now that is kind of funny, seeing as:
max link width: x16
current link width: x16
max link speed: 2.5Gb/s
current link...