An example of how to settle a long-running Internet debate and bust a revisionist history myth, by reading manuals, books, and magazine articles, doing some research, and confirming it with your own tests. C'mon folks, it's not that hard! This was the beta version of the video containing some voice synthesis. For those who wanted to hear the history lesson in my own voice, watch this version: https://www.youtube.com/watch?v=zpq9irl2yE4 Time flow: 0:12 First, a History Lesson 2:27 Zenith Z-148 PC 3:38 A Typical 486 PC 10:13 Gateway 2000 4DX-33 11:42 5x86 with Fake Cache 14:57 Turbo Buttons EOL 15:51 Don't take my word for it! Intel 486 SL Microprocessor SuperSet Data Book: https://www.datasheetarchive.com/pdf/download.php?id=c0c60bad6520953a7f3cbf0d757c8c6814c7c9&type=O #turbo #cpu #vintagecomputing