f3 is a simple tool that tests flash cards capacity and performance to see if they live up to claimed specifications. It fills the device with pseudorandom data and then checks if it returns the same on reading.

F3 stands for Fight Flash Fraud, or Fight Fake Flash.

https://github.com/AltraMayor/f3

GitHub - AltraMayor/f3: F3 - Fight Flash Fraud

F3 - Fight Flash Fraud. Contribute to AltraMayor/f3 development by creating an account on GitHub.

^GitHub