Version and / or Patch Used: 3.0 Technical Preview
Developer Homepage: http://crystalmark.info
Product Homepage: http://crystalmark.info/software/CrystalDiskMark/index-e.html
CrystalDiskMark is a disk benchmark software that allows us to benchmark 4K and 4K queue depths with accuracy.
* Sequential reads/writes
* Random 4KB/512KB reads/writes
* Text copy
* Change dialog design
* internationalization (i18n)
Note: Crystal Disk Mark 3.0 Technical Preview was used for these tests since it offers the ability to measure native command queuing at 4 and 32.
Here we turn the IOPS into MB/s by using 4K reads at 1, 4 and 32 queue depths. When reading 4K data the Samsung 840 Pro 512GB nearly gets to 40MB/s at a single queue depth. Only a very small number of consumer drives have broken the 40MB/s mark - the 840 Pro 256GB and the SuperSSpeed S301 SLC 120GB off the top of my head in the 2.5" form factor. As we expected after seeing the results on the previous page, Samsung has a lead here.
Also as expected from the previous page, OCZ has leads when writing 4K data to the drives. Up to this point we could say picking between these two drives comes down to where you want higher performance, reading or writing to the drive.
Let's keep going and see what happens when we introduce data to the flash and then test the drives.