I bought this for a new laptop with limited SSD space and no expandability. Now I've compared it head-to-head with an older Sandisk Ultra 30MB/s 64GB card I had in another laptop. , a USB 3.0 hub and a card reader or integrated USB 2.0 reader in my desktop workstation to write to a 4GB folder with files of different sizes, mostly smaller ones. This writes at 1.7 to 2.7 MB/s in the built-in reader, while the old Sandisk card writes at around 7.5 MB/s. With the USB 3.0 reader, the speed is faster, but proportionally, and the Sandisk card is three times faster. This is independent of whether the card is formatted in xFat or NTFS. I don't exactly hate the map, but I'm not sure I'll be using it the way I intended. I can't imagine using this in a digital camera unless it's a cheap, slow camera that takes low megapixel/resolution photos. Addendum: I just tested this card again with a folder of 20GB MP3 files in a USB 3.0 card reader. This time, the write speeds of the Sandisk and this card were more or less the same at around 11 MB/s. Maybe in this case it has something to do with the size of the files. In any case, in my actual use this card is quite slow and slower than my experience with these Sandisk cards I have on a number of laptops. If you read mostly and don't write, you don't care. If you're constantly deleting and adding files, you'll notice the relatively slow speed of this card, at least compared to the Sandisk Ultra, which isn't one of the fastest Sandisk cards out there.
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