7-Way SSD Round-Up: Sandforce vs. JMicron
CrystalDiskMark is another synthetic test we've started looking at that evaluates both sequential as well as random small and large file transfers. It does a nice job of providing a quick look at best and worst case scenarios with SSD performance, best case being large sequential transfers and worse case being small, random 4K transfers.
CrystalDiskMark does a good job of showcasing the performance difference between the differen firmware revisions used with the SandForce based drives and actually shows the JMicron based Zephyr with the strongest sequential reads and writes. Notice the OCZ Agility and OWC drives have much lower performance with 4K writes when the queue depth is increases, versus the Vertex 2 and Corsair drives. This performance difference is a direct result of the performance limiter incorporated into certain firmware revisions for SandForce 1200-based drives.
Like we saw in the ATTO benchmark, the newer 120GB drives from Corsair and OCZ perform just like the 100GB drives here.