Lexar NS100 256GB

The Lexar NS100 256GB is an entry-level SATA III solution designed primarily for legacy system upgrades, using a DRAM-less architecture to minimize component complexity. The drive typically pairs a controller from Maxio (commonly the MAS0902) or occasionally Marvell with 3D NAND flash that may alternate between TLC and QLC densities depending on supply. Without a dedicated SDRAM cache for address mapping, it relies on internal controller SRAM buffers and pseudo-SLC caching to manage I/O. The NS100 is subject to frequent unannounced component revisions, and its plastic chassis provides strictly passive thermal dissipation that depends on internal airflow rather than casing conductivity.

Key Specifications

• Interface: SATA III (6Gb/s)
• Sequential Read: Up to 520 MB/s
• Sequential Write: Up to 510 MB/s
• Controller: Variable (Commonly Maxio MAS0902 or Marvell 88NV1120)
• NAND Type: 3D NAND (Variable TLC/QLC mix)
• DRAM Cache: None (DRAM-less)
• Form Factor: 2.5-inch (7mm)
• Durability: Shock and vibration resistant (Non-mechanical design)

Hardware Alternatives

• Crucial BX500: A direct competitor in the DRAM-less segment, typically using Silicon Motion controllers (SM2258XT/SM2259XT) paired with Micron NAND and offering a similar performance profile with a more consistent supply chain for internal components.
• Kingston A400: Functionally similar to the NS100 and often using Phison S11 controllers; both drives share variable internal hardware revisions and plastic enclosures.
• SanDisk SSD Plus: Operates in the same tier; recent revisions have frequently used proprietary controllers and slower QLC NAND at lower capacities, making the NS100 a comparable alternative depending on the specific batch received.