AS SSD:
AS SSD is a relatively new benchmark designed specifically for solid state drives. The application contains five synthetic tests used to determine the sequential and random read and write performance of a drive.
 Samsung 950 PRO 512GB |
 Samsung 850 PRO 256GB |
AS SSD also includes a copy benchmark. This test copies an ISO (two large files), program (many small files) and game (small and large files), returning the speed and duration of each.
 Samsung 950 PRO 512GB |
 Samsung 850 PRO 256GB |
HD Tune Pro 5.50:
Next, I ran a series of tests using HD Tune Pro. This hard disk utility measures a drive's performance by testing its sequential read and write speeds as well as its access time, burst rate and CPU usage. For this review, I'm also going to use it to benchmark the 950 PRO's random read and write speeds, random access times and the number of operations per second.
 Samsung 950 PRO 512GB - Read Benchmark |
 Samsung 850 PRO 256GB - Read Benchmark |
 Samsung 950 PRO 512GB - Write Benchmark |
 Samsung 850 PRO 256GB - Write Benchmark |
The 950 PRO performed very well when benchmarked with HD Tune. The drive had average read and write speeds of 2179.5 MB/s and 1484.7 MB/s, respectively, and a burst rate of 515.4 MB/s when reading.
 Samsung 950 PRO 512GB - Random Access Read |
 Samsung 850 PRO 256GB - Random Access Read |
 Samsung 950 PRO 512GB - Random Access Write |
 Samsung 850 PRO 256GB - Random Access Write |
The 950 PRO didn't disappoint when doing random reads and writes. When reading 4KB blocks, the drive reached 41,785 IOPS and had an average speed of 163.223 MB/s. The 950 PRO was even faster when writing, reaching 55,251 IOPS with an average speed of 215.827 MB/s.
