The 2TB SanDisk Optimus GX PRO 850X is an M.2 2280 NVMe SSD without heatsink featuring a PCIe 4.0 x4 interface. It uses TLC 3D NAND, a DRAM cache and SanDisk nCache 4.0. This 2TB version reaches sequential write speeds of up to 6,600 MB/s and is rated at 1,200 TBW.
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