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.
 WD_BLACK SN850 1TB |
 Samsung 980 PRO 500GB |
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.
 WD_BLACK SN850 1TB |
 Samsung 980 PRO 500GB |
HD Tune Pro 5.75:
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 WD_BLACK SN850's random read and write speeds, random access times and the number of operations per second.
 WD_BLACK SN850 1TB - Read Benchmark |
 Samsung 980 PRO 500GB - Read Benchmark |
 WD_BLACK SN850 1TB - Write Benchmark |
 Samsung 980 PRO 500GB - Write Benchmark |
The WD_BLACK SN850 performed relatively well when benchmarked with HD Tune. The drive had average read and write speeds of 5,562.3 MB/s and 2,409.5 MB/s, respectively.
 WD_BLACK SN850 1TB - Random Access Read |
 Samsung 980 PRO 500GB - Random Access Read |
 WD_BLACK SN850 1TB - Random Access Write |
 Samsung 980 PRO 500GB - Random Access Write |
When reading 4KB blocks, the WD_BLACK SN850 reached 56,593 IOPS and had an average speed of 221.067 MB/s. The drive was even faster when writing, reaching 58,534 IOPS with an average speed of 228.650 MB/s.
