After unpacking we connected the microSD to an external SD/MicroSD reader and connected it to a USB3.0 port. You will get around 115.0GB of useable empty free space and with the exFAT file system.

Looking at the performance tests, the ATTO Disk Benchmark reports around 95 MB/sec reading and 65 MB/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 KIOXIA Exceria G2 series are rated Application Performance Class A1 category and already there are A2 rated cards that according to the SD Association "..It makes SD memory card much higher performance than A1 performance by using functions of Command Queuing and Cache.."

While the ATTO Disk Benchmark 4.01.0f1 gave slight lower numbers

The CrystalDiskMark software reports slight higher performance

While the AJA System Test benchmark also reports around 90MB/sec reading and 61MB/sec writing speeds with 1GB test file size.

- Conclusion

The KIOXIA Exceria G2 series is an entry-level product, with acceptable performance and a great retail price that can be used in all devices that have a free microSD slot. The product performance is around ~95MB/s reading and ~65MB/s writing performance, which is even better than what Kioxia states at their specs. As happens with all microSD A1-rated products, linear performance is good, however for exceptional small file reading/writing operation an A2-rated microSD card for sure would perform better. The retail price of the Kioxia Exceria G2 128GB is around 11.20 Euro and at that price range, it has very hard competition from other manufacturers that also offer A2-rated microSD cards. The product comes with 5 years of warranty, which is par with the competition and for sure won't be needed, since Kioxia microSD cards are based upon the legendary Toshiba DRAM chipsets. We feel that Kioxia should further lower the retail prices of the Exceria G2 series to catch up with the prices of the competition. Apart from this fact, we have no problem suggesting the Exceria G2 series for all users who wish to get reliable microSD cards at a reasonable retail price.