OCZ Agility 4 256GB SSD Review @ RWLabs
 

When it comes to solid state drives, capacity equals performance for the most part. With LSI SandForce Driven SATA drives performance climbs as capacity goes up, typically until the 240GB drive size where, performance is maximized. Marvell based drives are a little different though. Drives based on Marvell Silicon, like the OCZ Technologies Agility 4 we are reviewing today follow a different performance path.

http://www.rwlabs.com/article.php?id=653