Interface
WD BLACK SN7100 2TBPCIe 4.0 ×4 / NVMe
Samsung 990 PRO 2TBPCIe 4.0 ×4 / NVMe 2.0
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What changes?
The differences at a glance
Manufacturer facts for these exact variants. The order does not declare a performance winner.
DRAM cache
WD BLACK SN7100 2TB0 GB
Samsung 990 PRO 2TB2 GB
Cache arrangement
WD BLACK SN7100 2TBDRAM-less
Samsung 990 PRO 2TB2 GB DRAM
BLACK SN7100 2TB: 1 unknown fields · 990 PRO 2TB: 3 unknown fields. Unknown does not mean absent.
Compare capacity and cache, not just peak speed
Manufacturer speeds are maxima under stated test conditions. They do not show sustained writing after the cache fills. TBW is a write-endurance warranty limit, not a predicted failure date; time limits also apply. Check M.2 length, interface and heatsink clearance in the host manual. Price per TB uses nominal decimal capacity and a confirmed delivered total.
| Specifications | WDBLACK SN7100 2TBWDS200T4X0E-00CJA0Remove | Samsung990 PRO 2TBMZ-V9P2T0BWRemove |
|---|---|---|
| Interface | PCIe 4.0 ×4 / NVMe | PCIe 4.0 ×4 / NVMe 2.0 |
| Sequential read, up to | 7250 MB/s | 7450 MB/s |
| NAND type | TLC 3D NAND | TLC V-NAND |
| DRAM cache | 0 GB | 2 GB |
| Controller | Unknown | Samsung in-house |
| Random read, up to | 1000000 IOPS | Unknown |
| Factory heatsink | No | Unknown |
| Drive height, up to | 2.38 mm | Unknown |
| Cache arrangement | DRAM-less | 2 GB DRAM |
| Shop offers | €325.00€162.50 / TB · confirmed delivered total | No verified offers yet |
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