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.
Usually we just use CDM to look at 4k and NCQ performance, but CDM uses incompressible data so we're also going to look at the sequential speed as well. Starting off with the sequential test, we see the M3 Pro read a little faster than the Vertex 3 240GB. The 4k read performance is about the same between these two drives with a single command, but when 4 commands are given, the M3 Pro doubles the V3 240GB performance. At 32 commands the M3 Pro runs away from the V3 by around 70MB/s.
If you remember back to the HD Tune Pro write test, the M3 Pro was a little behind the Vertex 2 240GB. That test took place with compressible data, an area where SandForce based drives typically have an advantage. In CDM we are now looking at incompressible data. When it comes to incompressible files the Plextor M3 Pro 256GB has around a 120MB/s lead with sequential writes.
The 4k and NCQ tests also show a nice lead except for in the 4 command test.