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.
 Silicon Power S55 240GB |
 SanDisk Ultra Plus SSD 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.
 Silicon Power S55 240GB |
 SanDisk Ultra Plus SSD 256GB |
HD Tune Pro 4.61:
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 S55's random read and write speeds, random access times and the number of operations per second.
 Silicon Power S55 240GB - HD Tune Read Benchmark |
 SanDisk Ultra Plus SSD 256GB - HD Tune Read Benchmark |
 Silicon Power S55 240GB - HD Tune Write Benchmark |
 SanDisk Ultra Plus SSD 256GB - HD Tune Write Benchmark |
The S55 performed relatively well when benchmarked with HD Tune. The drive had average read and write speeds of 506.5 MB/s and 356.7 MB/s, respectively, as well as a burst rate of 168.1 MB/s when reading.
 Silicon Power S55 240GB - HD Tune Random Access Read |
 SanDisk Ultra Plus SSD 256GB - HD Tune Random Access Read |
 Silicon Power S55 240GB - HD Tune Random Access Write |
 SanDisk Ultra Plus SSD 256GB - HD Tune Random Access Write |
The S55 didn't disappoint when doing random reads and writes. When reading 4KB blocks, the drive reached 16,568 IOPS and had an average speed of 64.721 MB/s. The S55 was even faster when writing, reaching 21,321 IOPS with an average speed of 83.289 MB/s.
