Adata SU660 256Gb Sata SSD 3D QLC 
Experience Lightning-Fast Performance with the Adata SU660 256GB sata ssd. With read & write speeds up to 550/450 MB/s, it's 10x faster than a traditional hard disk. Featuring dynamic SLC caching, NAND Flash memory operates in single-level cell mode and boosts performance. They are more resistant to shock, vibration (1500G/0.5ms) and extreme temperatures (0°C-70°C) and therefore provide better protection for data. What’s more, SSDs also run silently and consume less power.
 
3D NAND in an easy PC upgrade
Read & write speeds up to 550/450 MB/s
Dynamic SLC caching
Faster performance
Advanced error correction code
Tougher , quieter , and more reliable