The Fastest 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. Verbatim PRO+ 64 GB 10 3 70.10 86.39
2. Kingston Ultimate 90/45 64 GB 10 I 48.73 93.71
3. Icidu 64 GB 10 I 38.63 63.05
4. Kingston Ultimate 233X 64 GB 10 I 37.80 62.65
5. Transcend Ultimate 64 GB 10 22.07 23.41
6. Verbatim Premium 64 GB 10 I 18.98 32.29
7. Sandisk Ultra 64 GB 6 17.99 23.58

All SDXC Cards

Icidu
Product Class UHS Writespeed Readspeed
Icidu 64 GB 10 I 38.63 MB/s 63.05 MB/s
Kingston
Product Class UHS Writespeed Readspeed
Kingston Ultimate 90/45 64 GB 10 I 48.73 MB/s 93.71 MB/s
Kingston Ultimate 233X 64 GB 10 I 37.80 MB/s 62.65 MB/s
Sandisk
Product Class UHS Writespeed Readspeed
Sandisk Ultra 64 GB 6 17.99 MB/s 23.58 MB/s
Transcend
Product Class UHS Writespeed Readspeed
Transcend Ultimate 64 GB 10 22.07 MB/s 23.41 MB/s
Verbatim
Product Class UHS Writespeed Readspeed
Verbatim PRO+ 64 GB 10 3 70.10 MB/s 86.39 MB/s
Verbatim Premium 64 GB 10 I 18.98 MB/s 32.29 MB/s

Test Method

We tested the CompactFlash cards with a Pretec USB 3.0 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.