Corsair Force Series GT 180GB Solid State Drive

Don't mind the VOID sticker on the bottom of the drive.  I mistakenly opened up the Force Series GT before remembering the product photo shoot.  In any case, the bottom of the SSD is black metal.  It's a separate piece from the top red part of the enclosure, and it's held down by four fine Phillips screws.  there are standard 2.5" drive mounting holes on the bottom of the drive.

The only connectors on the Force Series GT are for SATA data and power. They are the standard location, so this drive should have no problems being used in 2.5" hot swap bays or notebook computers.

Inside of the Force Series GT 180GB SSD, the two main components of the are exposed: the controller and the NAND modules.  The controller used is LSI SandForce's SF-2282.  This controller is very similar to the SF-2281 in that it has 8 flash channels, but the SF-2282 is able to support 16 bits per lane versus 8 with the SF-2281.  This change in spec addresses capacity limits, and shouldn't impact performance (as there are still 8 channels, regardless of controller).

The type of NAND modules used are Micron's synchronous 25nm MLC.  Each module is comprised of one 8GiB die, totaling 24 modules, which results in a total NAND capacity of 192GiB.  As the rated capacity of the drive is 180GB, the missing space is used for overprovisioning.  As there are 24 NAND modules, this results in the utilization of 6 of the 8 channels offered by the SF-2282 controller.  There are 4 dies per channel, and 4-way interleaving is supported by the LSI SandForce controllers to reduce latency and maintain speed.  The PCB itself supports 32 NAND modules, which is for higher capacity 240GB version of the Force Series GT.

We'll have to check with testing to see what kind of performance can be achieved with 6 channels used (instead of the full 8).  I'd presume that missing 2 channels would have a negative effect on sequential transfers, as these types of transfers have a higher likelihood of saturating the channels.  But through the use of 4-way interleaving and its resulting low latencies, there should be a benefit with transfers involving small page sizes.