The Samsung 950 Pro SSD the follow up to the legendary Samsung 850 Pro SSD has been unveiled by the company at its annual SSD summit in Seoul, Korea. The 950 Pro will be available at retail in October, with MSRPs of $199.99 (probably ~ 150) for the 256GB version, and $349.99 (~ 280) for the 512GB version. UK pricing is yet to be confirmed.
Based on Samsung's V-NAND technology and available in 512GB and 256GB capacities, the 950 Pro shuns the common 2.5-inch form factor and SATA interface for cutting-edge M.2 2280 and PCIe 3.0 x4. It also makes use of the Non-Volatile Memory Host Controller Interface, better known as NVMe.
Most SSDs still make use of the AHCI (Advanced Host Controller Interface) architecture, which was originally developed for spinning platter SATA hard drives back in 2004. While AHCI works fine for traditional hard drives, it was never designed for low latency NAND chips. As flash speeds have increased, AHCI has become a performance bottleneck. NVMe exploits both the PCIe bus and NAND flash memory to offer higher performance and lower latency.