Quote:
Originally Posted by xibalban
Thanks! I'm a tad confused about "small" files' definition. Small implies less than 100 MB, maybe?
About KoReader, I felt that with an upgrade to firmware 3.8.0, the stock experience would be good enough. Or will it no be?
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Koreader does offer some benefits for pdf files. Personally, I mostly read epubs and use the Kobo supplied software for that. Occasionally when I need to read some of the pdf manuals I have on my Aura HD, I use Koreader.
Small files varies depending on whom you talk to. The program I use for testing SD card performance on my Windows laptop is CrystalDiskMark. It has 4 performance tests. Sequential, 512KB, 4K and 4K QD32. For the most part, the performance with Sequential is best followed by 512KB. The 4K block size tests are useful for when you will be running a Linux/Android/whatever operating system which often read and write data in small chunks scattered over the storage medium. Useful when I was replacing the internal uSD card and wanted to keep the best performance.
For your purposes, any reputable card manufacturer would do though as Ken mentioned, SanDisk and Samsung seem to have the best small block performance even on their higher speed/larger capacity cards.
The other item to keep an eye on is the possibility of being sold a counterfeit card. I purchased two uSD cards which were supposedly Kingston 32GB cards. One of them failed when I attempted to copy a batch of video files which ran about 3GB each -- old film noir movies such as D.O.A. from the Internet Archive. When I ran the H2testw program on them, it reported them as 3.8GB cards not the 29.6GB which Windows reported them as being. And this was cards purchased from a local and fairly reputable shop.
Regards,
David