SanDisk SSD PLUS 480GB

The SanDisk SSD PLUS 480GB utilizes a DRAM-less architecture designed primarily for low-queue-depth client workloads. The drive typically pairs a Silicon Motion (e.g., SM2258XT) or proprietary SanDisk controller with varying generations of NAND flash, ranging from planar TLC in early models to 3D TLC or QLC in later revisions. Without a dedicated DRAM cache to store the logical-to-physical mapping table, the drive relies on a small amount of SRAM within the controller and pseudo-SLC caching to manage data placement and sustain burst performance. This model is frequently cited for silent component revisioning, where controller and NAND manufacturers change between batches, affecting thermal behavior and sustained write speeds; the DRAM-less design can lead to a sharp drop in write performance once the SLC cache is saturated.

Key Specifications

• Interface: SATA III (6 Gb/s)
• Form Factor: 2.5" / 7mm
• Max Sequential Read: 535 MB/s
• Max Sequential Write: 445 MB/s
• Controller: Variable (Commonly Silicon Motion SM2256S/SM2258XT or proprietary)
• NAND Configuration: Variable (TLC or QLC)
• DRAM Cache: None (DRAM-less)

Hardware Alternatives

• Western Digital WD Green 480GB: Following Western Digital's acquisition of SanDisk, the WD Green line shares significant architectural similarities with the SSD PLUS, often utilizing the same controller and NAND configurations in a different chassis.
• Crucial BX500 480GB: Operates in the same entry-level tier, featuring a similar DRAM-less design and relying heavily on SLC caching for performance.
• Kingston A400 480GB: Another direct competitor that utilizes a DRAM-less Phison S11 controller (typically), offering comparable input/output operations per second (IOPS) and limitations regarding sustained write workloads.