SAMSUNG SDSM950M2-256GP 950 PRO 256GB internal SSD

Samsung 950 PRO 256GB NVMe SSD

This internal solid state drive uses a PCI-Express 3.0 x4 interface and the Samsung UBX controller with 512MB DRAM cache. It delivers sequential reads up to 2200 MBps and writes up to 900 MBps in the M.2 2280 form factor. The refurbished unit targets professionals who need high throughput for demanding workloads.

Performance impact of the controller and cache

The UBX controller combined with 512MB DRAM enables random read performance up to 270000 IOPS at queue depth 32 and random write up to 85000 IOPS at the same depth. At queue depth 1 the figures are 11000 IOPS read and 43000 IOPS write. Average active power draw is 5.1W with a 6.4W burst maximum, and the drive operates from 0°C to 70°C.

Suitability for professional workloads

The 256GB capacity and 1500000 hour MTBF suit heavy workload professionals who prioritise endurance and low latency over maximum storage space. Users needing larger volumes or SATA connectivity should consider alternative drives. The 2.38mm height fits standard M.2 slots without clearance issues.