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! Time flow: 0:12 First, history lesson 2:37 Zenith Z-148 PC 3:48 A typical 486 PC 10:23 Gateway 2000 4DX-33 11:52 5x86 with fake cache 15:07 Turbo buttons EOL 16:01 Don't take my word for it! Note: This video was originally uploaded in October 2022 as an unlisted, updated version of the initial release of this video, which used a portion of text-to-speech synthesis which some viewers didn't like. I decided to make this version public, which is why it shows up as being published in February 2023, and retire the initial version of the video. Intel 486 SL Microprocessor SuperSet Data Book: https://www.datasheetarchive.com/pdf/download.php?id=c0c60bad6520953a7f3cbf0d757c8c6814c7c9&type=O #turbo #cpu #vintagecomputing