Chris Buechler wrote:
> Though I'm not extremely familiar with PCI-e, does it have the same
> shared bus limitations of PCI/PCI-X?

http://arstechnica.com/articles/paedia/hardware/pcie.ars/4

No.  Each PCI-E connector is seen by the OS as it's own PCI bus, and has
a dedicated link to the PCI-E host bridge.  A PCI-E x1 (single-lane)
connector is 2.5Gbit/sec full-duplex. Lanes can be bonded together for
more bandwidth.  x2, x4, x8, and x16 combinations are possible, but I
have never seen an x2 device or connector.  x16 is most commonly used
with video cards.

-- 

Phil Brutsche
phil at brutsche dot us