WD Black SN850X 2TB — Benchmarks & Specs
Bottom line: how fast is the WD Black SN850X 2TB?
In CrystalDiskMark 4K Q32T16 Read IOPS it scores 998,688 IOPS, per SSD-Tester.
Every figure above is a row in the tables below, and each row links out to the review or public benchmark database the number was taken from. SpecPicks aggregates published measurements; it does not report first-party benchmark runs.
The WD Black SN850X 2TB is a SSD released in 2022 from Western Digital. Data on this page draws on 10 synthetic benchmark results, aggregated from public benchmark databases (TechPowerUp, PassMark, Geekbench, Cinebench) and the LocalLLaMA community. Read this page when shopping the WD Black SN850X 2TB, comparing it against other SSDs in your build, or sizing it for a specific workload (gaming at 1080p/1440p/4K, productivity benchmarks, or local LLM inference).
Synthetic Benchmarks
Higher is better. Bars are scaled within each benchmark family (multi-thread, single-thread, etc.) so you can compare like-with-like at a glance.
| Benchmark | Relative | Score | Source |
|---|---|---|---|
| CrystalDiskMark 4K Q32T16 Read IOPS | 998,688 IOPS | SSD-Tester 2023-11-27 | |
| CrystalDiskMark RND4K Q32T16 Read | 998,688 IOPS | SSD-Tester 2023-11-27 | |
| CrystalDiskMark RND4K Q32T16 Write | 761,944 IOPS | SSD-Tester 2023-11-27 | |
| CrystalDiskMark 4K Q32T16 Write IOPS | 761,944 IOPS | SSD-Tester 2023-11-27 | |
| CrystalDiskMark RND4K Q32T16 Read | 743,828 IOPS | KitGuru 2022-11-02 | |
| CrystalDiskMark 4K Q32T16 Random Read | 726,685 IOPS | KitGuru 2022-11-02 | |
| CrystalDiskMark 4K Q32T1 Read IOPS (Peak Perf profile) | 726,685 IOPS | KitGuru 2022-11-02 | |
| CrystalDiskMark RND4K Q32T16 Write | 602,168 IOPS | KitGuru 2022-11-02 | |
| CrystalDiskMark 4K Q32T1 Write IOPS (Peak Perf profile) | 582,276 IOPS | KitGuru 2022-11-02 | |
| CrystalDiskMark 4K Q32T16 Random Write | 582,276 IOPS | KitGuru 2022-11-02 |
Full Specifications
| tbw | 1200 |
|---|---|
| interface | PCIe 4.0 x4 |
| capacity gb | 2000 |
| seq read mbs | 7300 |
| seq write mbs | 6600 |
WD Black SN850X 2TB — Frequently Asked Questions
What is the WD Black SN850X 2TB best used for?
When was the WD Black SN850X 2TB released, and what was its launch MSRP?
Where do the benchmark numbers on this page come from?
How does the WD Black SN850X 2TB compare to its predecessor?
Where can I buy the WD Black SN850X 2TB?
Buying guides that rank the WD Black SN850X 2TB's class
This page is the raw performance data. The guides below turn it into a ranked pick for a specific build.
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