Storage · SSDsWD_BLACK SN850X 2TBBrandSanDisk
Card updated2026-10-25
About the sameBetter to wait
WD_BLACK SN850X 2TB
The short answerA PCIe 4.0 gaming SSD with sequential reads up to 7,300MB/s. Sandisk already lists a newer model, so compare before buying.
USUS price (pre-tax)$439.99Best Buy · Checked 11-02 00:23
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US & China prices
| Price | Store | Amount | Converted | Checked | |
|---|---|---|---|---|---|
| US, before tax | Best Buy | $439.99 | ≈ ¥2,925 | Checked 11-02 00:232026-11-02 00:23 Beijing time · checked against the store page | Buy |
| US, with sales tax (est.)California base rate 7.25%, local tax extra$439.99 × (1 + 7.25%) = $471.89 | $471.89 | ≈ ¥3,137 |
Store pages have the final say on price · Conversions use the ECB reference rate on the day each price was checked (no rate on weekends / holidays → the latest earlier day): 11-02 1 USD = 6.6483 CNY · US, before tax = pre-tax
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Watch this
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Price history
USNow (pre-tax)$439.9930-day avg$434.9990-day low$429.99
$440$430$440
10-2511-02
US (pre-tax)
Prices we recorded ourselves, shown in USD
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Who it’s for / pitfalls
Good for
- PCIe 4.0 M.2 slots and gamers who want fast load times
- Players who need 2TB of space for a large game library
Not for
- Users who need PCIe 5.0 speeds
Known pitfalls
- PlayStation 5 compatibility is for the heatsink model only (WDS200T2XHE-00BCA0)
- Sandisk lists a newer Optimus GX PRO 850X, so check it before buying
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Key specs
- Capacity
- 2TB
- Interface
- PCIe 4.0 x4 (M.2 2280)
- Read / write speed
- sequential read 7,300MB/s, sequential write 6,600MB/s (2TB model)
- NAND
- Sandisk TLC 3D NAND
- Warranty
- 5-Year Limited Warranty
- DRAM cache
- 2GB LPDDR4 DRAM cache
- Endurance (TBW)
- 1,200 TBW (2TB model)
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True cost calculator
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Also consider
01Storage
Kingston FURY Renegade G5 2TB
Samsung 990 PRO 2TB
Kingston FURY Renegade G5 2TBKingston FURY Renegade G5 2TB
Capacity 2048GB · Interface PCIe 5.0 x4 NVMe · Read / write speed up to 14,700/14,000MB/s
US$379.99CNNo price yet
Price alert02StorageSamsung 990 PRO 2TBAbout the sameWorth waiting
Samsung 990 PRO 2TB
A 2TB PCIe 4.0 NVMe SSD with up to 7,450 MB/s sequential read and a 2GB DRAM cache, suited to a PC boot drive or game library.
US$639.99CNNo price yet
Price alert08
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