The Samsung 860 PRO 256GB SSD is a 2.5-inch SATA III internal solid-state drive with sequential read/write speeds of up to 560 MB/s and 530 MB/s, respectively. Key specs include a Samsung MJX controller, 512MB of DDR4 cache, V-NAND 2-bit MLC technology.  It also features AES 256-bit hardware encryption and is compatible with both PC and Mac systems. 

    Capacity: 256GB
    Form Factor: 2.5-inch
    Interface: SATA 6Gb/s, compatible with SATA 3Gb/s and 1.5Gb/s
    NAND Type: Samsung V-NAND 2bit MLC
    Controller: Samsung MJX Controller
    Cache Memory: 512 MB Low Power DDR4 SDRAM
    Dimensions: 100 x 69.85 x 6.8 mm
    Weight: Max 50.0g 

Performance

    Sequential Read: Up to 560 MB/s
    Sequential Write: Up to 530 MB/s
    Random Read (4KB, QD32): Up to 100,000 IOPS
    Random Write (4KB, QD32): Up to 90,000 IOPS 

Reliability and security

    Endurance: 300 TBW (Total Bytes Written)
    MTBF (Mean Time Between Failures): 1.5 Million Hours
    Encryption: AES 256-bit Encryption (Class 0), TCG/Opal IEEE1667 

Other features

    Management Software: Samsung Magician Software
    Supported Features: TRIM, S.M.A.R.T., Auto Garbage Collection, Device Sleep Mode
    Compatibility: PC and Mac systems