SanDisk is a well-known name in the flash memory industry. Founded in 1988, they developed the first flash-based SSD. They were later acquired by Western Digital in 2016, before being spun off as a public company in early 2025.
SanDisk is a name I’ve long been aware of, and one that — prior to this project — I was biased in favor of. I have a number of single-board computers that take microSD cards, and I typically defaulted to the SanDisk Ultra 16GB for their storage — and most of the time, had no issues with them. And since they’re such a major brand, I wanted to make sure they were properly represented in this project.
These cards were sent to me (via my Amazon wish list) by an anonymous donor. Thank you, anonymous donor!
On the performance testing front: I’ve only tested one sample so far, but all metrics were above average — but not very much. Random write speeds were this card’s strong suit, coming in at the 71st percentile (as of the time of this writing). But overall…this card’s performance is just average.
These cards carry the Class 10, U3, and V30 marks. Performance was good enough to qualify for all three of these marks.
On the endurance testing front:
- Sample #1 has completed 2,817 read/write cycles and has not yet experienced any errors.
- Sample #2 has not yet hit the 2,000 read/write cycle mark. It is currently expected to get there sometime in August 2025.
- Samples #3 and #4 are still in the package, waiting to be tested.
Overall? It’s too soon to draw any conclusions yet — I need to get some data from the other samples before I can draw any conclusions.
July 20, 2025