See the following links
http://www.tomshardware.com/news/ADATA-XPG_SX900-Premier_Pro_SP900-Premier_SP800,14812.html
See the following links
http://www.tomshardware.com/news/ADATA-XPG_SX900-Premier_Pro_SP900-Premier_SP800,14812.html
I don’t understand the question. What do you mean by overprovision?
Overprovisioning is when a portion of the total capacity is reserved and not eligable for data storage. This unused space is used by the SSD controller for wear leveling and other functions.
I ask this question and SanDisk has no plans to release a firmware that has 0% over provisoning. The trade off is endurance and performance.