Crucial v4 (256GB) Reviewby Kristian Vättö on November 22, 2012 1:01 PM EST
The Crucial v4
Overall the drive shares a design similar to the m4, though the two are not alike. Even though the v4 is a budget SSD, the case is made out of metal.
The v4 packaging doesn't include any fancy add-ons: There is the drive and mounting screws.
Since Crucial is a subsidiary of Micron, it’s not surprising to find Micron’s NAND inside the v4. What is a bit surprising is that Crucial has opted to use only eight NAND packages in the 256GB model, even though there are sixteen NAND sockets on the PCB. Each package works out to be 32GB (4x 8GB die) and are manufactured using IMFT’s 25nm process. As the v4 is a budget and “stock cleaning” model, I wouldn’t be surprised to see varying NAND configurations even among the same capacities. If there is more demand for 32GB packages, Micron may opt for sixteen 16GB packages instead to be able to clear 25nm NAND stocks as efficiently as possible.
The Phison PS3105 is an 8-channel SATA 3Gbps controller, similar to most consumer grade controllers. It's fabricated using a 90nm process and comes in a 324-pin BGA package but further specifics about the controller are unkown. TRIM and Native Command Queuing (NCQ) are, however, supported. There is also 128MB of LPDDR-333 acting as a cache, which is the minimum for the PS3105. Those unfamiliar with the Phison name might find it interesting to hear that their controllers are often found in budget USB flash memory devices (where performance is often a minor concern).
Intel Core i5-2500K running at 3.3GHz (Turbo and EIST enabled)
AsRock Z68 Pro3
Intel 188.8.131.525 + Intel RST 10.2
|Memory||G.Skill RipjawsX DDR3-1600 2 x 4GB (9-9-9-24)|
XFX AMD Radeon HD 6850 XXX
(800MHz core clock; 4.2GHz GDDR5 effective)
|Video Drivers||AMD Catalyst 10.1|
|Desktop Resolution||1920 x 1080|
|OS||Windows 7 x64|