Please explain the purpose of PCIe v2.0 (2.5 GT/s).
What is the advantage if I use v2.0 with 2.5 GT/s only when compared to PCIe V1.0 ?
What is the advantage if I use v2.0 with 2.5 GT/s only when compared to PCIe V2.0 with 5 GT/s as well as 2.5 GT/s?
In which case / application Intel's 82576 is useful? again in which case Intel's 82580 DB is useful?