The Fastest Micro SDXC Cards

These are the results of our speed test, sorted by writespeed performance. Click the bold tableheaders to make your own sorting.

Product Class UHS Writespeed MB/s Readspeed MB/s
1. Sandisk Extreme 64 GB 10 3 54.91 69.32

All Micro SDHC Cards

Product Class UHS Writespeed Readspeed
Sandisk Extreme 64 GB 10 3 54.91 MB/s 69.32 MB/s

Test Method

We tested the SDXC cards with a Kingston Card Reader and CrystalDiskMark 3.0 x64. The software ran five 1000MB write- and readtests on the product. We noted the fastest results. Results can differ per computer, so we use the same hard- and software on every test. The fastest results on our system, will be the fastest on yours as well.

1GB is normally 1.024MB. Vendors however, count 1GB as 1.000MB. We count the same way vendors do.