I am planning to use virtual machines, build a lot of C++ projects and work with signal processing, and don't plan to overclock (even if it is very simple with 2500K). Which CPU among these should i choose? The Xeon E3 gives HT, 2MB cache and new core architecture - Ivy Bridge. May i feel the difference, assuming that i do not plan to use Xeon's VT-d technology and don't plan to overclock 2500K? The motherboard will be ASRock H77 Pro4/MVP (H77 - no OC) - i found that it tested with this Xeon E3. Sorry for poor english, hello from Russia