Quote: Overall read performance is lower than most of the drives I have tested while the write performance in most tests is almost on par with the enthusiast level Vertex 4. That being said the drive is worlds apart from a pure mechanical or even Hybrid drive in just about every test. This gets to the crux of the matter as OCZ is positioning the Agility 4 as an entry level drive. As such the Agility 4 is going to offer that significant increase in how the system feels when compared to a system equipped with a spindle-based drive for users looking to upgrade, but dont want to spend a significant portion of their budget on a single storage drive. OCZ is able to keep costs in check by using its own in-house Everest 2 controller and 2Xnm asynchronous MLC NAND. Priced at $189, the 256GB Agility 4 is available for less than 80 cents per GB a game changer in terms of cost in an entry level 256GB solid state drive.