Minimum Trinity system requirements

All, In preparation for the R14.0.0 release, we would like to establish minimum system requirements for installing and running Trinity. Please refrain from "by gosh, by gum" guessing. :-) Please only share real-world experiences using Trinity with older hardware and distros as well as limited environments, such as the Raspberry Pi or ARM. We don't want to create absurd minimum requirements as has popular. We want to establish realistic minimum requirements. Thank you! Darrell