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WD_BLACK
WD_BLACK SN850X 2TB
M.2 2280 · PCIe 4.0
- Interface M.2 2280 · PCIe 4.0
- Sequential read / write 7,300 / 6,600 MB/s
- Rated endurance 1,200 TB written
- Flash TLC
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Price, availability and customer reviews are on Amazon.
Amazon listing: “WD_Black SN850X 2TB NVMe PCIe 4.0 x4 M.2 Internal Gaming SSD Without Heatsink” · ASIN B0B3RQDGL7
Who it’s for
An alternative to the 990 PRO with the same endurance rating.
Pros
- 1,200 TB rated endurance, 5-year warranty
- 7,300 MB/s read
Cons
- This listing is the version without a heatsink — some motherboards provide one, some don't
Pros and cons come from the maker’s specs below, not from testing this unit. How we pick.
Specifications
| Interface | M.2 2280 · PCIe 4.0 |
|---|---|
| Sequential read / write | 7,300 / 6,600 MB/s |
| Rated endurance | 1,200 TB written |
| Flash | TLC |
| Warranty | 5 years |
Source: WD_BLACK SN850X data sheet · Amazon listing checked 2026-09-29.
Compare with other memory & storage
| Product | Interface | Sequential read / write | Rated endurance | Flash | Warranty |
|---|---|---|---|---|---|
| Crucial P310 2TB | M.2 2280 · PCIe 4.0 | 7,100 / 6,000 MB/s | 440 TB written | QLC | — |
| Samsung 990 EVO Plus 2TB | M.2 2280 · PCIe 4.0 x4 / 5.0 x2 | 7,150 / 6,300 MB/s | 1,200 TB written | TLC (V8) | 5 years |
| Crucial T500 2TB | M.2 2280 · PCIe 4.0 | Up to 7,400 MB/s read (write not listed on the page we checked) | — | — | 5 years or rated TBW, whichever comes first |
| Samsung 990 PRO 2TB | M.2 2280 · PCIe 4.0 | 7,450 / 6,900 MB/s | 1,200 TB written | TLC | 5 years |
| WD_BLACK SN850X 2TBThis product | M.2 2280 · PCIe 4.0 | 7,300 / 6,600 MB/s | 1,200 TB written | TLC | 5 years |
| Samsung 9100 PRO 2TB | M.2 2280 · PCIe 5.0 | 14,700 / 13,400 MB/s | 1,200 TB written | TLC | — |