What is 5 GT/s DMI bus speed of the processor?

[bosssy]

What is 5 GT/s DMI bus speed of the processor? Now I don't ask what a "bus" is, I am asking what this number and words are "5 GT/s DMI". Also if a processor has a higher bus speed supported than the motherboard will it be incompatible? Because I've read in this thread: http://www.tomshardware.co.uk/answers/id-3420041/cpu-motherboard-chipset-socket-boot.html
that higher speed of the processor will be incompatible with the motherboard (which is kind of strange because most of the processors nowadays have much higher speed than the bus speed supported by the motherboards.

 

[James Mason]

https://www.edn.com/electronics-news/4380071/What-does-GT-s-mean-anyway-

unless you're working with old hardware, this isn't something you need to worry about anymore.