I have sandisk ultra class 10, which is supposed to support 30mb per second, but it's writing speed I think, and reading is much slower. That might be the other way around, I can't be bothered to check.Hermit wrote:SD cards are slooooooooow. You're likely to have class 10 cards at best. Their read and write speeds max out at 10 MB/s. That's probably ok for loading an OS or some other program or recording a video, but for anything more demanding it's truly a PITA. SSDs typically read and write data beyond the 500 MB/s range.
But I take the point. There is no comparison to the speeds you quote for SSDs.
My sdhc ultra class 10 works well enough to record HD tv pictures in real time, off my freesat box, and play it back without a problem.
I thought that that made it reasonably fast, but obviously not, going by what you said.
That's the main thing I use it for, but I have one in my phone and my satnav for use with the mp3 players.