Home SSDs WD BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe

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

Price range: $599.99–749
💎
Exceptional Value
Outperforms 77% of ssds at a lower price than 65%.
$200 is 20% below the $250 category median.
Brand: WD
Category: Ssd
A WD 4 TB PCIe Gen 4 x4 NVMe M.2 2280 SSD with up to 7,300 MB/s read, 6,600 MB/s write · 2400 TBW · TLC.
PQS: 100 (computed 2026-06-15 07:15)
GTIN-14: 00619659193454
WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe

Key specs

A human-friendly subset of populated specs
Capacity (GB)
4000
Form factor
M.2 2280
Interface
PCIe Gen 4 x4
NAND type
TLC
Read speed
7300 megabytes per second
Write speed
6600 megabytes per second
Endurance (TBW)
2400.0

Pros & Cons

Based on quantified comparisons vs. 328 ssds
✓ Pros
  • Storage Space (4000.0) — top 23% of ssds
✗ Cons
No notable weaknesses detected

How this Ssd compares vs. 328 ssds

Percentile rank for each spec — higher means this product outperforms more of its peers.
Capacity 4000.0GB
77% Above avg

Spec Profile Radar

Visual snapshot — outer edge = 100th percentile (best in class)

Offers

Retailer SKU Price Stock Offer Last seen
B&H WEWDBB9G0040 669.99 USD In stock View offer → 2026-05-15 02:38
Best Buy 6512129 599.99 USD Out of stock View offer → 2026-06-11 02:35
Newegg 9SIAPBJKXB0027 649.99 USD In stock View offer → 2026-06-07 02:24
walmart 00619659193454 749.00 USD In stock View offer → 2026-06-15 03:23

Recent price history (50)

Show price log (50 entries)
Retailer Price Stock Seen at
walmart 749.00 USD In stock 2026-06-15 03:23
walmart 749.00 USD In stock 2026-06-14 03:30
walmart 749.00 USD In stock 2026-06-13 03:33
walmart 749.00 USD In stock 2026-06-12 03:19
walmart 749.00 USD In stock 2026-06-11 03:21
bestbuy 599.99 USD Out of stock 2026-06-11 02:35
walmart 749.00 USD In stock 2026-06-10 03:27
bestbuy 599.99 USD Out of stock 2026-06-10 02:32
walmart 749.00 USD In stock 2026-06-09 03:30
bestbuy 599.99 USD Out of stock 2026-06-09 02:36
walmart 749.00 USD In stock 2026-06-08 03:31
bestbuy 599.99 USD Out of stock 2026-06-08 02:28
walmart 749.00 USD In stock 2026-06-07 03:20
bestbuy 599.99 USD Out of stock 2026-06-07 02:35
newegg 649.99 USD In stock 2026-06-07 02:24
walmart 789.00 USD In stock 2026-06-06 03:18
bestbuy 599.99 USD Out of stock 2026-06-06 02:29
newegg 649.99 USD In stock 2026-06-06 02:22
walmart 795.00 USD In stock 2026-06-05 03:28
bestbuy 599.99 USD Out of stock 2026-06-05 02:39
walmart 795.00 USD In stock 2026-06-04 03:26
bestbuy 599.99 USD Out of stock 2026-06-04 02:36
walmart 795.00 USD In stock 2026-06-03 03:22
bestbuy 599.99 USD Out of stock 2026-06-03 02:41
walmart 795.00 USD In stock 2026-06-02 03:24
bestbuy 599.99 USD Out of stock 2026-06-02 02:39
newegg 699.45 USD In stock 2026-06-02 02:21
walmart 795.00 USD In stock 2026-06-01 03:28
bestbuy 599.99 USD Out of stock 2026-06-01 02:40
newegg 699.45 USD In stock 2026-06-01 02:17
walmart 795.00 USD In stock 2026-05-31 03:29
bestbuy 599.99 USD Out of stock 2026-05-31 02:41
newegg 699.45 USD In stock 2026-05-31 02:24
walmart 795.00 USD In stock 2026-05-30 03:23
bestbuy 599.99 USD In stock 2026-05-30 02:35
newegg 699.45 USD In stock 2026-05-30 02:27
walmart 795.00 USD In stock 2026-05-29 03:27
bestbuy 599.99 USD Out of stock 2026-05-29 02:34
newegg 699.45 USD In stock 2026-05-29 02:28
walmart 795.00 USD In stock 2026-05-28 03:23
bestbuy 599.99 USD In stock 2026-05-28 02:36
newegg 699.45 USD In stock 2026-05-28 02:20
walmart 795.00 USD In stock 2026-05-27 03:25
bestbuy 599.99 USD Out of stock 2026-05-27 02:42
newegg 699.45 USD In stock 2026-05-27 02:12
walmart 795.00 USD In stock 2026-05-26 03:23
bestbuy 599.99 USD Out of stock 2026-05-26 02:29
newegg 699.45 USD In stock 2026-05-26 02:12
walmart 795.00 USD In stock 2026-05-25 03:27
bestbuy 599.99 USD Out of stock 2026-05-25 02:38

Full specs

Show full spec table
Capacity (GB)4000
Form factorM.2 2280
InterfacePCIe Gen 4 x4
NAND typeTLC
Read speed7300 megabytes per second
Write speed6600 megabytes per second
Endurance (TBW)2400.0
Reconciled at2026-03-06 10:56
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Related products

Simple similarity over extracted specs (publish_set only)
Debug data (expand)
Raw title WD_BLACK SN850X NVMe SSD Gaming Storage 4TB - WDBB9G0040BNC-WRSN
Raw brandWD
Raw categoryElectronics>Computers Laptops and Tablets>PC Gaming>PC Gaming Memory and Storage>PC Gaming SSD
Canonical highlights (populated fields only)
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core.seo_title WD WDBB9G0040BNC-WRSN - 4TB SSD
brand WD
model WDBB9G0040BNC-WRSN
gtin14 00619659193454
images[0] https://pisces.bbystatic.com/prescaled/500/500/image2/BestBuy_US/images/products/284eb65b-7099-4ccd-ba90-1cd5df5a2f47.jpg
storage.interface PCIe Gen 4 x4
storage.nand_type TLC
storage.read_speed 7300 megabytes per second
storage.capacity_gb 4000
storage.form_factor M.2 2280
storage.write_speed 6600 megabytes per second
storage.endurance_tbw 2400.0
category ssd
physical.width_in 0.87
physical.height_in 0.09
physical.weight_kg 0.01
physical.dimensions_in 0.09 x 0.87 x ? in
warranty.labor 5 Years
warranty.parts 5 Years
schema_version 1
BestBuy raw specs (pretty)
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Newegg raw specs
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