Kingston Technology Corp. SA400S37/960G A400 960GB 2.5" SATA III internal SSD

960GB SATA III SSD for consumer systems

The Kingston A400 SA400S37/960G is a 2.5-inch internal solid-state drive built with 3D NAND and a SATA III interface. It delivers maximum sequential read speeds of 500 MBps and maximum sequential write speeds of 450 MBps. The drive is rated for an MTBF of 1,000,000 hours and draws 0.195W at idle. It suits desktops and notebooks that use a standard 7mm 2.5-inch bay.

HDD replacement upgrade for older machines

This SSD replaces a mechanical hard drive in systems that still run on SATA III, offering up to 10x faster start-up, loading and file transfers. The jump is worth it when boot times, application launches or large-file copies feel sluggish on a spinning disk. Shock and vibration resistance makes it reliable for notebooks that move frequently. Capacities of 120GB, 240GB, 480GB and 960GB cover a range of storage needs.

Practical limits of the SATA III interface

Sequential throughput tops out at the SATA III ceiling of roughly 500 MBps read and 450 MBps write, so the drive cannot exceed those figures regardless of NAND speed. Random 4KB performance reaches 400 megabits_per_second read and 500 megabits_per_second write, which is typical for the protocol. The 960GB cache allocation matches the full capacity, but the interface remains the bottleneck for sustained heavy workloads.