Any sector with nothing written on it can be used as scrap.
So if you partition the entire thing, but just never write to the full disk (you never use all the space), that also works as overprovisioning.
Partitioning just forces that to happen.
So if you partition the entire thing, but just never write to the full disk (you never use all the space), that also works as overprovisioning.
Partitioning just forces that to happen.
It runs periodically and lets the SSD know about unused areas.
So as long as you don't fill up the drive and let trim do its thing the unused areas effectively do the same thing as over provisioning.
It it is also worth noting that many SSD's are over-provisioned by the manufacture anyway, in those drives manual over-provisioning might achieve very little anyway.