1. Is the USB Flash Drive Real Capacity?
Yes, the USB Flash Drive is the real capacity, you can use the H2text to verify it.
2. What the write speed?
The USB Flash Drive Write Speed is 5M/S — 10M/S or you will lucky to get 11M+. If you want to save 1GB film in USB flash drive that will take 2 minutes. But, the speed is affected by the performance of your computer. So, different computers will have different speeds.
3. Why the USB flash drive real capacity is not the correct capacity?
Flash memory vendors are using decimal arithmetic: 1MB = 1000kb, 1GB = 1000MB calculated, the operating system using binary arithmetic: 1MB = 1024kb, 1GB = 1024MB. So, there are some differences between display capacity and nominal capacity of flash memory products.
4GB is about 3.6GB
8GB is about 7.2GB
16GB is about 14.4GB
32GB is about 28.8GB
64GB is about 57.5GB