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.
 OCZ Agility 4 256GB |
 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.
 OCZ Agility 4 256GB |
 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 Agility 4's random read and write speeds, random access times and the number of operations per second.
 OCZ Agility 4 256GB - HD Tune Read Benchmark |
 SanDisk Ultra Plus SSD 256GB - HD Tune Read Benchmark |
 OCZ Agility 4 256GB - HD Tune Write Benchmark |
 SanDisk Ultra Plus SSD 256GB - HD Tune Write Benchmark |
The Agility 4 performed relatively well when benchmarked with HD Tune. The drive had average read and write speeds of 320.9 MB/s and 357.0 MB/s, respectively, as well as a burst rate of 77.8 MB/s when reading.
 OCZ Agility 4 256GB - HD Tune Random Access Read |
 SanDisk Ultra Plus SSD 256GB - HD Tune Random Access Read |
 OCZ Agility 4 256GB - HD Tune Random Access Write |
 SanDisk Ultra Plus SSD 256GB - HD Tune Random Access Write |
The Agility 4's random read and write performance was hit and miss. The drive lagged well behind the SanDisk Ultra Plus when doing random reads, reaching a mere 5,326 IOPS. The Agility 4 did much better when doing random writes though. In our tests, the drive reached 23,487 IOPS and had an average speed of 91.748 MB/s.
