this post was submitted on 16 Nov 2025
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UHS II micro SD cards operate at 312MB/s
That's pretty good.. It's like double a typical HDD read speed
Read or write? I can hit the write sticker speed on mine, but read is terrible.
If read is terrible it might be due to having atime writes turned on, or just a bad card. Usually read is better than write. What filesystem?
Fat32, its a card for a camera
Definitely want to make sure atime is turned off on computers for that if possible