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M.2 2280 Gen4 PCIe x4 NVMe 3D TLC Internal Solid State Drive (SSD)
Now these are pretty impressive numbers. You might want to wait for the GEN 3 prices to drop as they will be going to soon.
Performance
Max Sequential ReadUp to 4950 MBps
Max Sequential WriteUp to 4250 MBps 4KB Random
ReadUp to 680,000 IOPS 4KB Random
WriteUp to 600,000 IOPS
MTBF1,700,000 Hours