Originally posted by: nanaki333
have we even seen half of pcie's potential yet?
There are plenty of reasons to want to upgrade in speed/bandwidth. If future motherboards still offer the same number of traces as current ones, but have double the bandwidth available, this will allow more devices to be built into the motherboards and/or added on, especially in the server/enterprise level. Having 5.0 Gbps per lane will allow servers with higher speed connection networking (10 G-Ethernet can be easily managed), as well as allow more bandwidth to controller cards for devices like RAID arrays.
For home users, it won't make much of a difference yet for a while, other then allow quad-sli graphics on a single board.