Anvil's Storage Utilities:
Anvil's Storage Utilities is another new benchmark designed with SSDs in mind. The standard storage benchmark measures a drive's performance by testing its transfer speeds, access times and IOPS.
Samsung SSD 850 PRO 256GB
Samsung SSD 850 PRO 256GB (RAPID Mode)
Iometer:
Lastly, I ran a series of tests using Iometer. This tool can be configured to benchmark a number of things. In this case, I used it to measure the 850 PRO's read and write speeds and the number of operations per second. The tests were run using random bytes and a queue depth of 3.
The 256GB 850 PRO's performance was very similar to what we saw in our other tests. The drive was able to read at 538.03 MB/s and write at 510.53 MB/s. With RAPID mode enabled, its read and write speeds jumped to 602.9 MB/s and 829.81 MB/s, respectively.
The 850 PRO also performed very well when doing random reads and writes. In our tests, the drive was able to read at 179.89 MB/s and write at 337.79 MB/s. This by itself is impressive, but with RAPID mode enabled, its random write speed jumped to 391.97 MB/s.
According to Samsung, the 256GB 850 PRO is capable of 100,000 IOPS when reading and 90,000 IOPS when writing 4K blocks. In our tests, the drive reached 46,051 random read IOPS and 86,474 random write IOPS. RAPID mode had little impact on the 850 PRO's random read performance. However, with it enabled, the drive was able to reach 100,345 random write IOPS.
