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Western Digital
WD_BLACK SN7100
NVME · 2TB · Released November 21, 2024
Released in late 2024, the SN7100 replaces WD_BLACK's DRAM cache with a 4-channel Polaris 3 controller and host memory buffer, yet still matches the SN850X on sequential speed at 7,250/6,900 MB/s and actually edges ahead on random write IOPS at 1.4 million. That combination of DRAM-less efficiency and gen4 flagship-level throughput makes it the leaner, newer alternative within the WD_BLACK line for gamers who don't need a physical cache chip. Endurance and warranty terms carry over unchanged at 1,200TB and 5 years.
Specifications
- Capacity
- 2TB
- Interface
- NVME
- Sequential read
- 7250 MB/s
- Sequential write
- 6900 MB/s
- Random read
- 1000000 IOPS
- Random write
- 1400000 IOPS
- PCIe generation
- 4
- Form factor
- M.2 2280
- NAND type
- TLC
- DRAM cache
- No
- Controller
- WD/SanDisk in-house Polaris 3 (4-channel, DRAM-less)
- Endurance (TBW)
- 1200 TB
- Warranty
- 5 years
Capacities
| Capacity | Part number |
|---|---|
| 500GB | WDS500G4X0E-00CJA0 |
| 1TB | WDS100T4X0E-00CJA0 |
| 2TB | WDS200T4X0E-00CJA0 |
| 4TB | WDS400T4X0E-00CJA0 |
Sources
Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.
- https://documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-black-ssd/data-sheet-wd-black-sn7100-nvme-ssd.pdf
- https://www.westerndigital.com/company/newsroom/press-releases/2024/2024-11-21-new-speedy-and-spacious-storage-solutions-help-consumers-gear-up-for-the-holidays