Over-provisioning is a function that provides additional capacity specifically for data to be erased from an SSD, without interrupting system performance. The dedicated over-provisioning space may be adjusted to the user's preference, delivering benefits that include faster speed and longer SSD life.

Should I use Overprovision my SSD?

Unless the drive gets near being full there is no benefit to overprovisioning. All it does is guarantee there will be empty space for the drive to perform its background tasks - otherwise it slows way down when near full. Making sue you never fill the drive has the same effect as over-provisioning so the call is yours.

Should I enable provisioning?

Over-provisioning not only improves performance but often increases the life of an SSD. With more flash NAND space available to the SSD controller and less load on the NAND results to less flash wear over its lifetime meaning the drive is more durable.