Quote:
Originally Posted by abij
Hello,
I chanced upon a sale of Sandisk micro SD cards today. Then I was thinking on this forum whether there is a compiled list of Kobo devices with internal micro SD card slots. Considering the performance of a micro SD card has improved over the years, if we swap the internal SD card, replace it with a UHS-II card, will it make Kobo fly? I am not sure whether it is the CPU or SD card bus speed that chokes the overall performance.
What do you guys think?
Thanks.
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What I've found over the years is the most critical spec for use in a Kobo ereader is the 4K small block read/write speeds (currently I use Crystal DiskMark 6 and pay special attention to the 4KiB Q1T1 read/write speeds). There is no guarantee that a high speed SD card will have decent specifications for those small block tests since they are often optimized for large block (video, images) sequential read/writes.
There was a thread in the XDA forums about speed testing (find it at
A Closer Look At MicroSD and Reader Speed and one oriented to the Raspberry Pi at
microSD Card Benchmarks.