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WD BLACK SN850X 4TB

Price and performance details for the WD BLACK SN850X 4TB can be found below. This is made using thousands of PerformanceTest benchmark results and is updated daily.

  • The first graph shows the relative performance of the Hard Drive compared to the 10 other common Hard Drives in terms of PassMark Disk Rating.
  • The 2nd graph shows the value for money, in terms of the Disk Rating per dollar.

WD BLACK SN850X 4TB

Description:  WDS400T2X0E

Drive Size:  3.6 TB

Other names:  WD_BLACK SN850X 4000GB, NVMe WD_BLACK SN850X 4000GB

Drive First Benchmarked: 2022-09-18

Drive Rating/$Price: 74.14

Overall Rank:  145

Last Price Change:  $699.99 USD (2022-08-22)

Average Drive Rating
51900
Samples: 2223

Disk Test Suite Average Results for WD BLACK SN850X 4TB

Sequential Read6,635 MBytes/Sec
Sequential Write5,775 MBytes/Sec
Random Seek Read Write (IOPS 32KQD20)4,463 MBytes/Sec
IOPS 4KQD1101 MBytes/Sec
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Pricing History


Drive Rating Relative to Top 10 SSDs Common Drives
As of 25th of May 2025 - Higher results represent better performance
Drive Average Disk Rating
WD BLACK SN850X 4TB
51,900
Samsung 990 Pro PM9F1 4TB SSD
51,587
WD BLACK SN850X 2000GB
51,532
KINGSTON FURY Renegade 2TB SSD
50,496
Samsung 990 Pro PM9F1 2TB SSD
50,115
Samsung 990 Pro PM9F1 1TB SSD
48,979
KINGSTON KC3000 2TB
48,823
WD BLACK SN850X 1TB
47,321
Kingston FURY Renegade 1TB SSD
45,486
KINGSTON KC3000 1TB
44,691
Last 5 Baselines for WD BLACK SN850X 4TB
Most recent listed first
Baseline Disk Rating
BL2639966 - May 21 2025
57224
BL2639909 - May 21 2025
57690
BL2639779 - May 21 2025
55031
BL2639594 - May 21 2025
57110
BL2639261 - May 20 2025
54607