Soon you will see a new wave of motherboards getting PCIE 3.0 support but well, there's nothing out there utilizing all that extra bandwith and power spec. Well, good news, AMD's next generation of graphics processors (HD 7000 series) reportedly will be PCI-Express Generation 3 compliant. The desktop discrete graphics cards will feature PCI-Express 3.0 x16 bus interfaces, and will be fully backwards-compatible with older versions of the bus, including Gen 1 and Gen 2.
PCIE 3.0 doubles the bandwidth over PCI-E 2.0, with 1 GB/s of bandwidth per lane, per direction. PCI-Express 3.0 x16 would have 32 GB/s (256 Gbps) of bandwidth at its disposal, 16 GB/s per direction.
