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.
Still, there are those of us who work with MP3s, pictures and other data that is compressed and in this series of tests we see how compressed data performance differs on these two drives. Normally we use CDM to look at 4k and 4k NCQ, but today we are looking at the sequential and 512k performance. The synchronous flash Mercury Extreme Pro 6G is around twice as fast as the asynchronous flash Electra.
Obviously there are two distinct classes of SandForce SF-2281 drives that differ by the flash type, but are there actually three different classes with two separate asynchronous? If you look back to the Corsair Force 3 review you'll see that the Force 3 hits a brick wall at around 140MB/s in all of these tests. Since I reviewed the Force 3 I've also discovered this 140MB/s wall in some other asynchronous flash drives. The OWC Electra has no such 140MB/s write limit and is able to write data at over 250MB/s.