WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe

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What to look for:
  • NVMe SSD for OS and games (fastest)
  • SATA SSD for budget storage
  • HDD for mass storage (photos, videos) at low cost
💰 Minimum 1TB NVMe for gaming. Add a 2TB+ HDD for media if needed
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ProductTypeCapacityReadValuePrice
WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe Storage
WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe
WD0🔥 DEAL -$925
NVMe
4TB
7.3GB/s
D
$1724.99
$799.99
2 stores
Specifications
TypeNVMe
Capacity4TB
InterfaceNVMe
FormM.2 2280
PCIeGen4
PCIe Gen4
Read7.3GB/s
Write6.6GB/s
DRAM CacheYes
NAND TypeTLC
RPM7200
HeatsinkNo
Model #WDBB9G0040BNC-WRSN
UPC619659193454
PERFORMANCE
55%
Customer Reviews★★★★★5.0 · 5 reviews
★★★★★I can’t wait for the price to go down
They do what they promised it would do it just over price that’s all
Maxwellpms · 2026-05-09 · via bestbuy
★★★★★Fast and Reliable Storage Upgrade
Super easy to install and the performance boost was instantly noticeable. Fast load times, smooth performance, and great value for the money. Highly recommend for anyone upgrading their PC
DanielG · 2026-05-09 · via bestbuy
★★★★★The best buy for your computer
Necessary to build your computer, I’m glad I was able to grab this quality product at Best Buy
BBDollarsExpert · 2026-05-08 · via bestbuy
★★★★★Review
The item is exactly what I wanted and works just as described.
Tony · 2026-05-06 · via bestbuy
★★★★★A very solid choice
Very easy to install and format. Quick speeds, not too hot, would recommend
Justin · 2026-05-01 · via bestbuy
Buy Now
Newegg3RD-PARTY SELLERUNCONFIRMED
✓ In Stock
$799.99
Buy →
Best Buy
✗ Out of Stock
$796.99
Buy →
Amazon
Not tracked at this retailer
N/A
VALUE SCORE
D
6.9
Below average
Performance (55%) ÷ Price ($799.99) = 6.9
S ≥28 · A ≥20 · B ≥14 · C ≥8 · D <8
💰
Below MSRP
Was $1724.99 → $799.99
54% off
WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe Storage
CONSIDER INSTEAD
SAVE $76298% of this product's perf
S501 128GB NVMe SSD 3D NAND1.3 PCIe Gen3x4 M.2 2280 Internal Solid State Drive (Read Speed up to 1,100 MB/s) Compatib...
Cap
128
Read
550MB/s
Type
NVMe
$37.99
+45% FASTER$698 cheaper
CRAS C910 500GB M.2 2280 NVMe PCIe Gen4x4 Laptop & Desktop Internal SSD Heatsink Included, up to 5000MB/s (K500GM2SP0...
Cap
500
Read
14000MB/s
Type
NVMe
$101.99