AT80612004740AA - Intel Xeon EC5509 Quad Core 2.00GHz 4.80GT/s QPI 8MB L3 Cache Socket FCLGA1366 Processor

Intel?? Virtualization Technology for Directed I/O (VT-d) continues from the existing support for IA-32 (VT-x) and Itanium?? processor (VT-i) virtualization adding new support for I/O-device virtualization. Intel VT-d can help end users improve security and reliability of the systems and also improve performance of I/O devices in virtualized environments.Intel?? VT-x with Extended Page Tables (EPT), also known as Second Level Address Translation (SLAT), provides acceleration for memory intensive virtualized applications. Extended Page Tables in Intel?? Virtualization Technology platforms reduces the memory and power overhead costs and increases battery life through hardware optimization of page table management.Idle States (C-states) are used to save power when the processor is idle. C0 is the operational state, meaning that the CPU is doing useful work. C1 is the first idle state, C2 the second, and so on, where more power saving actions are taken for numerically higher C-states.