On 09/08/11 16:46, Luke Kenneth Casson Leighton wrote: > single-lane PCI-e is still only gigabit > AFAIK, single-lane "1st generation" PCIe is 2.5 gigabit, and "2nd generation" is 5 gigabit. Also significant is the max-payload-size capabilities of either end of the link (lspci -vv). A lot of consumer stuff tends to be 128byte only, which adds overhead... Tim.