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WD Black SN850X WDS400T2X0E 4 TB
without radiator

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WD WDS400T2X0E
Placement
internal
Volume
4 TB
Form factor
M.2
M.2 interface
PCIe 4.0 4x
Controller
SanDisk 20-82-20035-B2
Cache memory
4000 MB / DDR4 /
Memory type
3D TLC NAND
Number of 3D NAND layers
SanDisk 112-layer BiCS5
NVMe
Write speed
6600 MB/s
Read speed
7300 MB/s
Write IOPS
1100 K
Read IOPS
1200 K
TBW
2400 TB
DWPD
0.3 times/day
Manufacturer's warranty
5 years
TRIM
Size
22x80 mm
Weight
8 g
Official Website
shop.sandisk.com
Added to E-Catalog
September 2022
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog WD 2026 - new arrivals, bestsellers, and the most relevant models WD.
How to choose the right SSDChoosing an SSD with the required speed and good reliability for home, work and gaming

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without radiator

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WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe WDBB9G0040BNC-WRSN

Strap in for breakneck gaming speeds with the WD_BLACK SN850X NVMe internal SSD. Crush load times and slash throttling, laggi... moreng, and model pop-ins for a smooth, fast experience that lets you compete at your absolute peak. This purpose-built gaming drive comes in the capacity of 4TB. With the advanced features of Game Mode 2.0 (Windows only) plus speeds that approach the limits of the PCIe Gen43 interface, the WD_BLACK SN850X NVMe SSD delivers top-tier performance to keep you playing, streaming, recording, and dominating the game.
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Delivery: in USA
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$599.99

WDBLACK 4TB SN850X NVMe Internal Gaming SSD Solid State Drive - Gen4 PCIe, M.2 2280, Up to 7,300 MB/s - WDS400T2X0E WDS400T2

TRANSFORM YOUR PC. Get top-tier performance and ridiculously short load times for your gaming PC or workstation with insane s... morepeeds up to 7,300 MB/s (2) MORE ROOM, MORE GAMES. Capacities up to 8TB (1) built with Western Digital TLC 3D NAND, means you get to download more games - and stop deleting your favorites. HEATSINK FOR THE WIN. All capacities have an optional heatsink version to help maintain peak performance through your most intense gaming sessions. DO MORE WITH DASHBOARD. The downloadabl
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Delivery: in USA
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$649.99

WD BLACK SN850X 4TB NVMe PCIe 4.0 x4 M.2 Internal Gaming SSD without Heatsink WDBB9G0040BNC-WRSN

UNMATCHED SPEED - Experience lightning-fast gaming with PCIe Gen4 x4 interface, achieving sequential read speeds up to 7300MB... more/s and write speeds up to 6600MB/s for rapid data access. MASSIVE STORAGE - Store your extensive game library and large files effortlessly with a spacious 4TB capacity, ensuring you never have to compromise on your favorite titles or content. OPTIMIZED PERFORMANCE - Benefit from exceptional responsiveness with random read/write speeds up to 1200000 IOPS, reducing lag and e
Newegg.com
Delivery: in USA
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$649.99

SanDisk - WDBLACK 4TB SN850X NVMe Internal Gaming SSD Solid State Drive - Gen4 PCIe, M.2 2280, Up to 7,300 MB/s - WDS400T2X0

WD_BLACK 4TB SN850X NVMe Internal Gaming SSD Solid State Drive - Gen4 PCIe, M.2 2280, Up to 7,300 MB/s - WDS400T2X0E
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Delivery: in USA
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$799.99

WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe WDBB9G0040BNC-WRSN

Strap in for breakneck gaming speeds with the WD_BLACK SN850X NVMe internal SSD. Crush load times and slash throttling, laggi... moreng, and model pop-ins for a smooth, fast experience that lets you compete at your absolute peak. This purpose-built gaming drive comes in the capacity of 4TB. With the advanced features of Game Mode 2.0 (Windows only) plus speeds that approach the limits of the PCIe Gen43 interface, the WD_BLACK SN850X NVMe SSD delivers top-tier performance to keep you playing, streaming, recording, and dominating the game.
BestBuy.com
Delivery: in USA
Report
$1,724.99
High-quality SSD with low temperatures
2 December 2025 
A good SSD that is on par with the KC3000, but runs hotter. It's almost the same drive, but with some minor drawbacks in terms of temperature. The drive itself is quite high-quality and maintains normal temperatures under the motherboard's secondary heat sink.
Cache, quality, similarity to KC3000
Temperature in some scenarios
Sriblouse WD WDS100T2X0E more than year
wonderful model, really honored
23 August 2024 
Corresponds to the declared speeds
Not a bad price/performance ratio
I still peeled off the sticker, under the native x570 radiator, after running CrystalDiskMark, it was 5 degrees lower at the peak
Dmitriy Mitususe WD WDS200T2X0E less than month
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WD Black SN850X WDS400T2X0E configurations

Price for WD Black SN850X WDS400T2X0E
WD Black SN850X WDS100T2X0E 1 TB
without radiator
from $229.9913 offers
WD Black SN850X WDS100T2XHE 1 TB
with radiator
from $206.625 offers
WD Black SN850X WDS200T2X0E 2 TB
without radiator
from $321.5911 offers
WD Black SN850X WDS200T2XHE 2 TB
with radiator
from $399.997 offers
WD Black SN850X WDS400T2X0E 4 TB
without radiator
from $599.997 offers
WD Black SN850X WDS400T2XHE 4 TB
with radiator
from $649.993 offers
WD Black SN850X WDS800T2X0E 8 TB
without radiator
from $1,699.009 offers
WD Black SN850X WDS800T2XHE 8 TB
with radiator
from $1,699.006 offers
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