I have this feeling that you already know the answer to that and it would be one heck of a challenge actually ever achieving a steady 6.8GB/s transfer write speed. This is the flash industry theme, however, where the SSD is advertised at its maximum potential and not steady state or speeds that will occur over linger file transfers. I would guess that this is because those speeds are so greatly affected by the data sample they are moving, whether it be media or much smaller OS files for instance. We could relate this to how vehicles advertise their high mileage couldn’t we? Thanks for jumping in!