The 850 Pro and 850 EVO SSDs double the maximum capacity of their predecessors and offer 2TB (terabytes) of capacity in a 2.5-in. form factor (size) for laptops and desktops.
The tech involved Samsung’s 3D V-NAND technology, which stacks 32 layers of NAND atop one another to offer greater flash memory density. Additionally, the drives take advantage of multi-level cell (MLC) and triple-level cell (TLC) (2- and 3-bit per cell) technology. Believe that, if you will.
The 850 SSD Pro and EVO drives remain in the same 7mm, 2.5-in. aluminium case as their predecessors did. The capacities include 120GB, 250GB, 500GB, 1TB and 2TB models.
The 850 Pro is more for power users and client PCs that may need higher performance with up to 550MBps sequential read and 520MBps sequential write rates and up to 100,000 random I/Os per second (IOPS). The 850 EVO SSD has slightly lower performance with 540MBps and 520MBps sequential read/write rates and up to 90,000 random IOPS.
Of course the price is not cheap. The 2TB model of the 850 Pro will retail for $999.99 and the 850 EVO will sell for $799.99 so you will really need to have access to lots of data to justify that price.
However dropping down the book list the prices start sounding a little more reasonable. The 1TB EVO SSD will sell for $399; the 500GB for $179; the 250GB for $99 and the 120GB for $69. The 1TB 850 Pro will retail for $499; the 512GB model for $259; the 256GB model for $144.99 and the 128GB model for $99. We don’t know what the prices are in Greek drachmas, sorry.
Samsung guarantees the 2TB 850 Pro for 10 years or 300 terabytes written (TBW), and the 2TB 850 EVO for five years or 150 TBW. But then it would, wouldn’t it?