The NAND Flash used in USB, SD cards and SSDs all have endurance limits meaning one cannot continue to write to them forever. Flash based products will eventually wear out however with features like wear-levelling and over-provisioning an SSD will typically last longer than the system it was installed into. We measure drive endurance in TBW (Terabytes Written) and depending on drive capacity one can write hundreds of terabytes, up to petabytes. Performance of the SSD will remain the same throughout the life of the drive. Learn more about TBW.