It's not company policy to give out endorsements. I have a 1 gig Micro SD card from Samsung inside an SD card adaptor and that exhibits the same slowness problems as a no name 4 gig Micro SD card.andydansby wrote: ↑Sat May 30, 2020 2:27 pm Nice. I had not even really thought about the overhead of some SD cards as it wasn't even on my radar. The next time before I buy my next one, I'm going to try to make sure it's a faster SD card. I had always thought PNY was a decent SD card, but now I'm going to have to stick with Sandisk.
Any recommended cards other than Sandisk?
I've no idea why it takes ~17 seconds to write 49152 bytes to a file - especially when I can copy a larger file onto the same Samsung card on my PC instantaneously. My Plus D disk drive I had many moons ago managed to write an entire 48K RAM snapshot in about 3 seconds to a 3.5" floppy disk.