Related: a few years ago had to select microSD models for reliability (longevity): turned out that because of scarcity of available technical details*, the best indicator seemed to be the length of the warranty (5yrs, 10yrs, lifetime...).
Do you have better advice?
* cpr the article:
> [manufacturer] doesn’t publish any detailed specifications about the cards’ internal workings [...] I shouldn’t have to go this far in hardware reverse-engineering to just ask a simple question of what Flash SanDisk used in their high-endurance card
--
About details in the article, instead: it states that 3D NAND should be more reliable (3D has less interference than planar) - but actually I read that 3D NAND can be more fragile physically, and that the bits-per-cell value remains crucial (the less the better)...
That can just as well be marketing or a way to pad the price.
64 GiB microSD still costs ~$14 locally, but the same thing can be had for $4 from China without any warranty.
They stick endless limited warranty on it and increase the price so much that it's economical for them to just replace a few cards that people will actually bother to return, and still make profit. And warranty will tell you nothing about quality.
In fact on many products you can explicitly choose to pay more for longer warranty.
Positive and strongly correlated, as long as the part is not a fake from a fly-by-night shop.
I personally buy SD cards and USB memory sticks from bhphotovideo, whose customers (pro and enthusiast photographers), care greatly about not losing their images, so B&H watches their suppliers closely. My 2c.
Do you have better advice?
* cpr the article:
> [manufacturer] doesn’t publish any detailed specifications about the cards’ internal workings [...] I shouldn’t have to go this far in hardware reverse-engineering to just ask a simple question of what Flash SanDisk used in their high-endurance card
--
About details in the article, instead: it states that 3D NAND should be more reliable (3D has less interference than planar) - but actually I read that 3D NAND can be more fragile physically, and that the bits-per-cell value remains crucial (the less the better)...