Summing up, both the Toshiba Exceria M303 64GB and the Exceria M501 64GB microSDXC cards performed adequately in our benchmarks, and delivered the read and write speeds they were supposed to. Both cards are shipped with convenient adapters and provide piece of mind being waterproof, X-ry proof and shock proof, plus they 're backed by a 5-year warranty.
With the Exceria M303 64GB you can easily expect reads and writes at over 94 MB/s and 72 MB/s, respectively. Generally its performace was in tandem with what we had experienced when we tested the Toshiba M401 Exceria Pro 64GB, so you get an equally good product at an even better price - it will cost you not more than $30.
The Exceria Pro M501 64GB also turned in a good all-around performance on both CRyslal Disk Mark and Atto Disk Benchmars. It reacheed its maximum write speed of around 146 MB/s by the 64KB block size, while read speeds continued to improve throughout the test, topping out at 212 MB/s. This is roughly the same read speed as the N101 but slower write speed. Compared to the other SD cards such as the Lexar 1800x 64GB UHS-II and the N101 we mentioned previously, the Exceria Pro M501 64GB was competitive in the read part but slower when writing. That's not always bad, considering that the Exceria Pro M501 64GB costs just $46. So for its price point, the M501 provides a good value.