What are the system requirements for previous versions of Unity?

I know that I can go to https://unity3d.com/unity/system-requirements to see the system requirements of the current version of Unity (2018.2 atm), but is there a log or a history of the system requirements for previous versions? Specifically I’m looking for the system requirements of builds for 2018.1 and 2017.4 LTS, but seeing a list of the requirements for all versions would also be interesting. This we help me and others decide on which version to use to Maximize backwards compatibility for their games.

Edit: I am most interested in the Operating System requirements

Build Versions don’t matter or have very little effect on the performance of the user’s system.