Intel - FSB/QPI/UPI

# Reference
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# Brief
- FSB - `Front Side Bus`
- QPI - `QuickPath Interconnect`' - `@2008`
- UPI - `Ultra Path Interconnect` -  `@2017`

## FSB

![image](https://user-images.githubusercontent.com/2216970/128959898-7d40891b-58bc-4bab-bef2-a691fa569930.png)


# UseCase
