External drive buyers can have unique priorities. Some want 8TB of storage and are willing to put up with the relative fragility and low performance of spinning platter disks. Other want speed and portability, and Adata's SD600 external SSD nicely fits that bill. The SD600 series includes 256GB and 512GB models built with 3D NAND flash. The SSDs operate over the USB 3.0 interface and boast DRAM and SLC buffer caches for increased performance.
The specs list is pretty light on details. Sequential read performance is listed as up to 440 MB/s, while sequential write performance can hit figures as high as 430 MB/s. The spec sheet said "performance may vary based on SSD capacity," so the 256 GB drive may not be capable of reaching these figures. Adata says the 3D NAND offers "greater longevity, reliability, and durability" than older flash types, though there's no word on exact endurance figures.
Adata is more forthcoming with the physical details about the SD600. The drives weigh 3.2 oz. (90 g) and measure 3.15" x 3.15" x 0.6" (or 8 cm x 8 cm x 1.5 cm). Buyers will be able to choose between traditional black and easier-to-keep-track-of red. Regardless of color, the drives have plastic chassis with a grippy-looking textured silicone layer for impact absorption. There's currently no pricing information, but the drives will be backed by a three-year warranty when they hit store shelves.
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