Version and / or Patch Used: 3.0 Technical Preview
Developer Homepage: http://crystalmark.info
Product Homepage: http://crystalmark.info/software/CrystalDiskMark/index-e.html
Download here: http://crystaldew.info/category/software/crystaldiskmark
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.
In CDM we're looking at 4K performance. The Samsung 840 250GB delivers nearly 33MB/s in the QD1 4K test. This is a high result that matches some of the fastest drives on the market today. The 840 scales well too achieving nearly 110MB/s at QD4 and 387MB/s at QD32.
The Samsung 840 250GB doesn't deliver the big sequential write performance found on some of the other drives, but it does dazzle us with 4K low queue depth performance.
In this set of tests we're using incompressible data for the first time in the review and get to see the how the 840 compares to the Team SandForce drives (Intel 335 and OCZ Vertex 3 Max IOPS).The two orange lines show sequential performance. The 840 250GB manages to split the 335 and Max IOPS in incompressible sequential data.?