After unpacking we connected the microSD to an external SD/MicroSD reader and connected it to a USB3.0 port. You will get around 115GB of useable empty free space.

Passing to the performance tests, the ATTO Disk Benchmark reports around 95MB/sec reading and 65Mb/sec writing speeds. Note that this performance comes with higher than 64kb sized files, after all this microSD aims for constant writing performance of HD video, not small files writing/reading..

The CrystalDiskMark software reports slight higher performance

While the AJA System Test benchmark also reports around 90MB/sec reading and 62MB/sec writing speeds with 1GB test file size.

- Conclusion

The KIOXIA Exceria High Endurance MicroSD 128GB is a product that aims for specific target group, aka Dashboard cameras, surveillance cameras, and any other steady video recording devices that require high amount of reading/writing operation due to 24/7 working operation. Using "normal" MicroSD cars for such use probably will not end well and most companies at the specs may even not honor their warranty...

We found the Exceria High Endurance microSD 128GB to be a good performer with around 95mb/sec reading and 65Mb/sec writing performance that is more than enough for constant 4k/60 video recording. The product comes with a high endurance of 40.000 Hours of FullHD video recording at the retail price of ~32 Euro, which is par with what other manufacturers are offering. We have no problems recommending this MicroSD card for all users who wish high performance and good reliability for their needs.