Ubuntu 18.04 LTS, Fedora 28, and Clear Linux 22250 were each tested on six systems. The hardware for each system was obviously maintained the same throughout the testing process. The purpose of testing the six systems isn't to compare the performance between processors/systems given other hardware differences at play, but for getting a relatively broad look at how each of the three modern Linux x86_64 distributions are performing in an out-of-the-box manner across these different generations and brands of hardware.