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WD WDS400T2X0E

Black SN850X NVMe PCIe M.2 4TB

▲ 63332 ▼

Release date ≈ Q3 2022.

Average Bench: 533% (1st of 1072)

Based on 4,434 user benchmarks.  Model: WD_BLACK SN850X 4000GB
Poor: 303%Average: 533% Great: 688%

Popular builds with this SSD

Outstanding average bench

The WD Black SN850X NVMe PCIe M.2 4TB averaged 432.9% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WD Black SN850X NVMe PCIe M.2 4TB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 1,548MB/s
Avg. Sequential Write Speed 3,823MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the WD Black SN850X NVMe PCIe M.2 4TB is 385%. This is a particularly wide range which indicates that the WD Black SN850X NVMe PCIe M.2 4TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Write Speed 188MB/s
Avg. 4K Random Read Speed 66MB/s
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Average Bench

(Based on 4,434 samples)
Rank 1533%
Min Avg Max
2,067 Read 3,770 4,616
1,803 Write 3,823 4,871
1,745 Mixed 2,951 3,560
1,736 SusWrite 3,570 4,763
795% 3,528 MB/s
Min Avg Max
45.6 4K Read 66 83.4
64 4K Write 188 305
48.5 4K Mixed 82.3 109
305% 112 MB/s
Min Avg Max
818 DQ Read 1,821 2,578
154 DQ Write 1,388 2,165
292 DQ Mixed 1,548 2,355
1,173% 1,586 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
3TB free (System drive)
Firmware: 624331WD Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 4100 4207 4386 4093 3317 2656 MB/s
573% Outstanding
Read 4,025
Write 4,097
Mixed 3,052
SusWrite 3,793
843% 3,742 MB/s
4K Read 69.6
4K Write 253
4K Mixed 95.4
362% 139 MB/s
DQ Read 1,877
DQ Write 1,287
DQ Mixed 1,582
1,181% 1,582 MB/s
3TB free (System drive)
Firmware: 624281WD Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 4222 4255 4023 3146 3192 3170 MB/s
548% Outstanding
Read 4,516
Write 4435
Mixed 3,363
SusWrite 3668
899% 3,995 MB/s
4K Read 74.6
4K Write 147
4K Mixed 84.7
299% 102 MB/s
DQ Read 1,308
DQ Write 992
DQ Mixed 1,142
856% 1,147 MB/s
1.5TB free (System drive)
Firmware: 624311WD Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 3360 3427 3424 3425 3010 2256 MB/s
444% Outstanding
Read 3,442
Write 3,136
Mixed 2,377
SusWrite 3,150
681% 3,026 MB/s
4K Read 58.3
4K Write 158
4K Mixed 90.1
288% 102 MB/s
DQ Read 945
DQ Write 148
DQ Mixed 285
276% 459 MB/s
3.5TB free (System drive)
Firmware: 624331WD Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 2864 2876 2900 2924 2928 2939 MB/s
378% Outstanding
Read 2,282
Write 2,736
Mixed 2,175
SusWrite 2,905
572% 2,524 MB/s
4K Read 46.3
4K Write 113
4K Mixed 50.5
195% 70 MB/s
DQ Read 1,640
DQ Write 616
DQ Mixed 1,239
887% 1,165 MB/s
3TB free
Firmware: 624361WD Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 825 824 826 823 825 825 MB/s
170% Outstanding
Read 1,306
Write 826
Mixed 979
SusWrite 825
220% 984 MB/s
4K Read 50.8
4K Write 19.3
4K Mixed 26.6
121% 32.2 MB/s
DQ Read 956
DQ Write 469
DQ Mixed 737
541% 721 MB/s
4,434 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,667,426 SSDs tested

 Prices

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EbayUS $29319 mins
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Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Typical Black SN850X NVMe PCIe M.2 4TB Builds (Compare 3,969 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 453%
UFO
Desktop
Desktop 125%
UFO
Workstation
Workstation 596%
UFO

Motherboard: Asus ROG STRIX Z790-E GAMING WIFI

CPU
Core i9-13900KIntel  $501Bench 129%, 49,132 samples2,027x
Core i7-13700KIntel  $345Bench 126%, 41,056 samples662x
Core i9-13900KFIntel  $495Bench 129%, 16,914 samples271x
GPU
RTX 4090Nvidia  $1,847Bench 370%, 25,956 samples1,381x
RTX 4080Nvidia  $720Bench 290%, 22,998 samples472x
RTX 4070-TiNvidia  $680Bench 240%, 46,082 samples350x
SSD
Black SN850X NVMe PCIe M.2 4TBWD  $293Bench 533%, 4,434 samples1x
RAM
Skill Intl F5-6000J3636F162x16GBGBench 172%, 21,264 samples236x
Skill Intl F5-6400J3239G162x16GBGBench 186%, 14,947 samples197x
Skill Intl F5-6400J3239G322x31.5GBGBench 190%, 6,603 samples163x
EDIT WITH CUSTOM PC BUILDER Value: 81% - Excellent Total price: $2,640

Popular Black SN850X NVMe PCIe M.2 4TB compatible motherboards:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute

Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.

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Gaming Desktop ProGaming

How it works

  • - Download and run UserBenchmark
  • - CPU tests include: integer, floating and string
  • - GPU tests include: six 3D game simulations
  • - Drive tests include: read, write, sustained write and mixed IO
  • - RAM tests include: single/multi core bandwidth and latency
  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
  • - Identify the strongest components in your PC
  • - See speed test results from other users
  • - Compare your components to the current market leaders
  • - Explore your best upgrade options with a virtual PC build
  • - Compare your in-game FPS to other users with your hardware
Solid State Drive Rankings (Price vs Performance) April 2024 SSD Rankings

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.

 Comments

Added n/a ago.
USA-User
Avatar level
9,834

Terrible (edit your comment) Add link

3 months ago.

TUR-User
Avatar level
5,522

Good

4 months ago.

but Samsung 990 pro 4tb is more better

arrxw
Avatar level
44

Excellent

12 months ago.

If you install this in a ps5 it will outrun the series x.

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opinion?
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Over the hill
Age: 20 months

Speed Comparisons

vs Crucial MX500 250GB
vs Samsung 850 Evo 120GB
vs Samsung 860 Evo 250GB
vs Samsung 870 Evo 250GB
vs Samsung 850 Pro 512GB
vs Samsung 850 Evo 250GB
vs HyperX Savage 240GB
vs Crucial MX300 275GB
vs Samsung 850 Evo 1TB

1072 Drives (Compared) Thousands of user benchmarks compiled into one comparison list

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
What is the effective SSD speed index?
How is the AS SSD write score calculated?
How is the AS SSD read score calculated?
How is the AS SSD total score calculated?
ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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