Western Digital is trying to redefine the word “RPM”
The German-language forum that the article mentions has been doing some great detective work: <a href="https://www.hardwareluxx.de/community/threads/crystaldiskinfo-zeigt-fakewert-an-alle-wd-my-book-8tb-drehen-anscheind-mit-7-200rpm.1235655/" rel="nofollow">https://www.hardwareluxx.de/community/threads/crystaldiskinf...</a><p>The conclusion on page 4 of the above thread:<p>> Non-Pro RED = 5400rpm according to data sheet<p>> Pro Red = 7200rpm according to data sheet<p>> Internal both 7200rpm and 120Hz.<p>> Apparently <i>all</i> WD / HGST helium plates have real 7200rpm, no matter what it says.<p>Simply absurd, if true. Here, for example, is a screenshot of WD's WD100EFAX store page: <a href="https://imgur.com/HseW9Pa" rel="nofollow">https://imgur.com/HseW9Pa</a><p>No mention of an RPM "class". The spec sheet does refer to it as "5400 RPM Class", but with no further description of what the term means: <a href="https://media.flixcar.com/f360cdn/Western_Digital-3805661149-eng_spec_data_sheet_2879-800002.pdf" rel="nofollow">https://media.flixcar.com/f360cdn/Western_Digital-3805661149...</a><p>What a world when you can't even trust the spec sheet. What's next, 10 watt class drives that pull 20 watts? 3-year class warranties?