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M.2 NVMe SSDs such as ADATA’s XPG SX8000 are a game-changer for PCs. There is simply no other upgrade that offers as dramatic an improvement to the feel and response of your system. If you’re moving from a hard drive, you’ll be astounded. If you’re moving from a SATA SSD, you’ll still be extremely pleased.
Specs and pricing
The SX8000 is a four-lane, PCIe 3.0 (1GBps) M.2 2280 (22mm wide, 80mm long) SSD using 3D (layered) TLC NAND technology. To mitigate the relatively slower writes of TLC (triple level cell/three-bit) NAND, a DRAM cache is employed, as well as some of the TLC treated as SLC for a secondary cache.

Stacked/layered/3D NAND is used for storage in the SX8000, but there’s cache to keep performance brisk. Note: The digital removal of chip markings was done by ADATA, not PCWorld.
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