By the way, why do you need to know this? If we knew more specifics, we might be able to help you a little more. Do you need memory speed, PCI speed, connection-to-southbridge speed? Looking to choose a CPU, or is this some sort of research assignment?
There is no more an FSB in the Intel architecture.
The original front-side bus architecture has been replaced by HyperTransport, Intel QuickPath Interconnect or DMI 2.0 in modern volume CPUs. http://en.wikipedia.org/wiki/Front-side_bus
By the way, why do you need to know this? If we knew more specifics, we might be able to help you a little more. Do you need memory speed, PCI speed, connection-to-southbridge speed? Looking to choose a CPU, or is this some sort of research assignment?