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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: 74.13

Overall Rank:  125

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

Average Drive Rating
51891
Samples: 2050

Disk Test Suite Average Results for WD BLACK SN850X 4TB

Sequential Read6,619 MBytes/Sec
Sequential Write5,771 MBytes/Sec
Random Seek Read Write (IOPS 32KQD20)4,465 MBytes/Sec
IOPS 4KQD1102 MBytes/Sec
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Pricing History


Drive Rating Relative to Top 10 SSDs Common Drives
As of 24th of April 2025 - Higher results represent better performance
Drive Average Disk Rating
WD BLACK SN850X 4TB
51,891
WD BLACK SN850X 2000GB
51,554
Samsung 990 Pro PM9F1 4TB SSD
51,547
KINGSTON FURY Renegade 2TB SSD
50,513
Samsung 990 Pro PM9F1 2TB SSD
50,102
Samsung 990 Pro PM9F1 1TB SSD
48,975
KINGSTON KC3000 2TB
48,773
WD BLACK SN850X 1TB
47,397
Kingston FURY Renegade 1TB SSD
45,409
KINGSTON KC3000 1TB
44,850
Last 5 Baselines for WD BLACK SN850X 4TB
Most recent listed first
Baseline Disk Rating
BL2570322 - Apr 21 2025
54813
BL2568498 - Apr 20 2025
50409
BL2568140 - Apr 20 2025
52043
BL2568103 - Apr 20 2025
57655
BL2568039 - Apr 20 2025
56714