The Core microarchitecture returned to lower clock speeds and improved processors usage.
This result was in both available clock cycles and power compared with preceding NetBurst of the Pentium 4/D branded CPUs.
|PCI Express 2.0|
PCI Express was designed to replace the general-purpose PCI expansion bus, the high-end PCI-X bus and the AGP graphics card interface.
Unlike previous PC expansion interfaces, rather than being a bus it is structured.