Hello, first of all sorry for my english.
I recently brought a Samsung 840 Pro 512GB model, by default it's has a 9-10% not available for the user and it's used ( as far as I know ) for internal use of the controller ( garbage collection, etc ).
In some articles, forums, etc people is starting to leave unpartitioned space of the disk for over provisioning via the Magician Software of Samsung. I used all the space available by the drive ( 476GB ) so I don't know if maybe i need to repartition the disk just for leaving son space for over provisioning.
I used my computer primarly for Virtual Machines, for testing, training, etc so I don't know if this over provisioning could help or not. Normally the average free space on my disk is about 20% of the total.
Thanks in advance.