New memory stick testing...odd behaviour

Joe Pineapples

Distinguished Member
Just bought a SanDisk Ultra Flair 32 GB USB 3.0 stick and been testing it with crystaldiskmark and usb flash benchmark, with both giving similar results. That is, when I first plug the stick in, I get results about one third of those expected. If I then physically remove (software eject first) and insert it in the same socket, then re-run the benchmark, I get about the expected/rated speed. I don't know if its normal behaviour or if there's a problem, but obviously I don't want it defaulting to the slower speed if I need to use it as a bootable/install Win10 O.S (its main purpose).

(Running the benchmark twice without removing the stick gives the same slower result).


Last edited:


Distinguished Member
Possibly some sort of caching. The more important small file rates don't change much though, so I wouldn't worry about it.

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