Uploaded January 2025 | Updated September 2026, 3 weeks ago

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SD cards explained -- including their capacity types, speed classes, application classes, and bus interfaces. Video covers the latest SDUC cards and SD Express, and also includes comparative tests of UHS-I, UHS-II and SanDisk Quickflow UHS-I cards.

As noted in the video, I personally always purchase SanDisk SD and microSD cards, and usually the Extreme PRO models. The cards I currently use are available from Amazon as follows:

256GB SanDisk Extreme Pro UHS-I card:
Amazon US: amzn.to/40jtdv7
Amazon UK: amzn.to/3DEELjP

64GB SanDisk Extreme PRO UHS-II card;
Amazon US: amzn.to/4a6Of3l
Amazon UK: amzn.to/3Pn2Ga1

64GB SanDisk Extreme PRO micro UHS-I card:
Amazon US: amzn.to/3W6HclL
Amazon UK: amzn.to/4fQ9Pui

You can also find the above cards, and well as other products that I use, on the ExplainingComputers Amazon storefronts:

EC Amazon US: amazon.com/shop/explainingcomputers
EC Amazon UK: amazon.co.uk/shop/explainingcomputers

Please note that the above are affiliate links, and that as Amazon Associate I earn a commission from any qualifying purchases.

More videos on computing and related topics can be found at:
youtube.com/@ExplainingComputers

And more videos on film and other making, plus retro tech, are on my Christopher Barnatt channel here: youtube.com/@ChristopherBarnatt

Chapters:
00:00 Titles & Intro
00:48 Card Sizes & Capacities
02:54 Speed Classes
05:15 Bus Interfaces
09:34 QuickFlow & UHS-II Tests
14:19 Reality Check

#Sdcards #SDUX #SDXC #SDExpress #8TB #UHSII #ExplainingComputers