SanDisk X400 256GB SSD Review

1. Introduction2. SanDisk X400 256GB SSD3. Sandisk Dashboard Software4. Testing Methodology5. Crystaldiskmark6. Atto Disk Benchmark7. AS SSD8. IOMeter9. Closing Thoughts10. View All Pages

The Sandisk X400 uses a 2.5in, 7mm format chassis and weighs in at 37.4g (59.7g for the 1TB version).

It measures 100.5 mm x 69.85 mm x 7 mm.

The PCB for the 256GB model is very small not even reaching half way along the enclosure. A thermal pad very nearly covers the whole area of the PCB keeping two NAND packages, the controller and the cache IC cool. The PCB is held in place by a couple of screws – undoing these reveals another two NAND packages on the reverse side of the board.

The four NAND packages are SanDisk’s own 15nm TLC NAND coded 05478064G. The cache chip is a Micron 256MB DDR3L-1600 package.

At its heart of the X400 is a Marvell 88SS1074-BSW2 four channel controller. Marvell’s fifth generation SSD controller is built on a 28nm process and supports up to 15nm TLC/MLC/SLC NAND as well as 3D NAND. It also supports DEVSLP, ONFI 3/Toggle 2, 256-bit AES encryption and TCG Opal 2.0 support.

Become a Patron!