The Ulimate SU900 comes in an eye-catching, black and gold box. Along with a picture of the drive, the front advertises many of its key features including its 256GB capacity, SATA 6Gbps interface and 3D NAND. The back of the box provides a bit more information regarding the SU900's features and performance. Inside, you'll find the SSD, a 3.5" adapter bracket, a mounting spacer for use with traditional 9.5mm drive bays, mounting screws and a small, fold out guide containing warranty and service information.
The Ultimate SU900 looks very similar to ADATA's other 2.5-inch SSDs. The top of the outer casing is made out of black plastic with a large, black and gold sticker showing that the SSD is part of the company's SU900 series. The bottom of the casing is made out of metal and is painted black to match the top. The sticker on the bottom shows information like the model number, warranty code and WWN code.
Like the Ultimate SU800, the SU900 uses SMI's SM2258 controller. Designed specifically to meet the unique demands of managing 3D TLC NAND, this customizable turnkey controller solution employs SMI's proprietary NANDXtend error-correcting and data protection technology to triple the P/E cycles of 3D TLC NAND. The SM2258 also features advanced Direct-to-TLC and SLC caching algorithms for optimal sustained read and write performance.
For the 256GB version of the SU900, ADATA has opted to use its own Micron manufactured 3D MLC NAND flash. Looking at the picture above, you can see that there are four 32GB NAND flash packages on either side of the PCB. The drive also has a single 256MB NANYA DDR3L memory chip that is used for caching.