Top positive review
2 people found this helpful
Fast, reliable, gets the job done!
on February 13, 2014
I like these a lot, and they definitely beat out non UHS-1 cards by a lot in terms of speed. Sandisk has also been a very reliable brand for me in terms of data integrity.
The read speed matters if you have a USB3.0 reader, it won't matter much if you don't.
The write speed is determined by the class-1 destinction of UHS-1. This is the speed you need for 1080p video BUT, supposedly some Sony cameras prefer a 15MB/s minimum write speed. class-1 (This one) is only 10MB/s. I haven't tested but in my NEX-6 anyway this card works fine. In my NEX-5R, I have had some overheating issues that -may- be related to the write speed, not sure.
Until class-3 cards become available (minimum write speed is 30MB/s if I recall correctly), which are for 4K video writing, this is about as good as it gets.
Note that a higher speed where it says 45MB/s* or 90MB/s has to do with READ speed and it's a MAXIMUM value. It has nothing to do with write speed (that's the 1 inside the little U). Write speed is what matters if you're trying to speed up fps on your DSLR or trying to get better write performance for some other device.