WD WDS400T2X0E

Black SN850X NVMe PCIe M.2 4TB

Black SN850X NVMe PCIe M.2 4...
BENCHMARKS (1,129)
MKT (0.1%)
BUILDS
(2)
BUY • $350

Effective Speed +462% Effective Speed 462%Average Score +552% Read 763%, Write 884%, 4K Read 100%, 4K Write 132%, Mixed 753%, 4K Mixed 90%, SusWrite 1,142%Peak Score +565% Read 818%, Write 919%, 4K Read 94%, 4K Write 147%, Mixed 744%, 4K Mixed 89%, SusWrite 1,144%Value & Sentiment +102% User Rating -13%, Market Share -338%, Price -279%, Value 1,039%Nice To Haves +553% DQ Read 583%, DQ Write 517%, DQ Mixed 607%, ADQ Read 452%, ADQ Write 406%, ADQ Mixed 512%, Age 828%, AS-SSD Total 516%

Average Bench: 553% (1^st of 1071)

Based on 1,129 user benchmarks. Model: WD_BLACK SN850X 4000GB

Poor: 317%Average: 553% Great: 682%

Popular builds with this SSD

Outstanding average bench

The WD Black SN850X NVMe PCIe M.2 4TB averaged 452.9% 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 1,591MB/s

Avg. Sequential Write Speed 3,990MB/s

See where your SSD ranks →

Terrible consistency

The range of scores (95th - 5th percentile) for the WD Black SN850X NVMe PCIe M.2 4TB is 365%. 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 Read Speed 68.8MB/s

Avg. 4K Random Write Speed 203MB/s

Average Bench

(Based on 1,129 samples)

Rank 1553%

Min	Avg	Max
2,238	Read 3,945	4,649
1,909	Write 3,990	4,939
1,853	Mixed 3,064	3,572
1,803	SusWrite 3,683	4,817
827% 3,670 MB/s

Min	Avg	Max
46.1	4K Read 68.8	83.4
62.7	4K Write 203	302
47.6	4K Mixed 85.4	110
321% 119 MB/s

Min	Avg	Max
802	DQ Read 1,801	2,508
228	DQ Write 1,463	2,209
496	DQ Mixed 1,591	2,343
1,202% 1,618 MB/s

User Benchmarks

Bench

Sequential

Random 4k

Deep queue 4k

The fastest SSD (mainstream) averages a speed of 100%

USA-User, 10 hrs ago.

3.5TB free (System drive)

Firmware: 624311WD Max speed: PCIe 5,000 MB/s

SusWrite @10s intervals: 4984 4917 4945 4847 4847 4849 MB/s

697% Outstanding

Write 4,869

Mixed 3,570

SusWrite 4,898

1,016% 4,505 MB/s

4K Read 82.8

4K Write 279

4K Mixed 107

410% 156 MB/s

DQ Read 1,999

DQ Write 1858

DQ Mixed 1,924

1,445% 1,927 MB/s

FRA-User, 12 hrs ago.

3.5TB free

Firmware: 624311WD Max speed: PCIe 5,000 MB/s

SusWrite @10s intervals: 4328 4379 4346 4311 4368 4335 MB/s

628% Outstanding

Write 4,178

Mixed 3,099

SusWrite 4,344

861% 3,809 MB/s

4K Read 63.7

4K Write 269

4K Mixed 88.9

353% 140 MB/s

DQ Read 2,653

DQ Write 2,341

DQ Mixed 2,512

1,880% 2,502 MB/s

USA-User, 7 hrs ago.

3.5TB free (System drive)

Firmware: 624311WD Max speed: PCIe 5,000 MB/s

SusWrite @10s intervals: 3626 3990 4084 4204 4234 4212 MB/s

569% Outstanding

Write 3,963

Mixed 3,329

SusWrite 4,058

876% 3,889 MB/s

4K Read 70.7

4K Write 139

4K Mixed 77

279% 95.5 MB/s

DQ Read 1,588

DQ Write 1,451

DQ Mixed 1,522

1,141% 1,520 MB/s

CHE-User, 3 hrs ago.

1.5TB free

Firmware: 624331WD Max speed: PCIe 5,000 MB/s

SusWrite @10s intervals: 4380 4171 4147 3544 2375 1325 MB/s

568% Outstanding

Write 4,692

Mixed 3,480

SusWrite 3,324

900% 3,998 MB/s

4K Read 80.7

4K Write 232

4K Mixed 106

381% 140 MB/s

DQ Read 1,643

DQ Write 1,415

DQ Mixed 1621

1,190% 1,560 MB/s

1,129 MORE »

Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 67,509,870 SSDs tested.

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 1,269 builds) See popular component choices, score breakdowns and rankings.

Gaming 453%

UFO

Desktop 125%

UFO

Workstation 599%

UFO

Motherboard: Asus ROG MAXIMUS Z790 HERO

CPU
Core i9-13900KIntel $560Bench 129%, 25,364 samples	881x
Core i9-13900KSIntel $752Bench 131%, 2,022 samples	134x
Core i9-13900KFIntel $546Bench 129%, 7,190 samples	104x

GPU
RTX 4090Nvidia $1,600Bench 370%, 17,532 samples	596x
RTX 3090Nvidia $1,500Bench 210%, 158,856 samples	99x
RTX 4080Nvidia $1,100Bench 290%, 11,448 samples	98x

SSD
Black SN850X NVMe PCIe M.2 4TBWD $350Bench 553%, 1,129 samples	1x

RAM
Skill Intl F5-6400J3239G162x16GBGBench 192%, 5,688 samples	72x
Skill Intl F5-6400J3239G322x31.5GBGBench 195%, 1,084 samples	68x
Skill Intl F5-7200J3445G162x16GBGBench 206%, 755 samples	52x

EDIT WITH CUSTOM PC BUILDER

Value: 90% - Excellent

Total price: $2,510

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 freeware 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 upgrades.

UserBenchmark of the month

Gaming

Desktop

ProGaming

CPU

GPU

SSD

HDD

RAM

USB

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) June 2023 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]

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

level
9,398

Excellent (edit your comment) Add link

18 days ago.

worlds best ssd of 2023 for gaming

arrxw

level
46

Excellent

1 month ago.

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

Your
opinion?

▲Like ▼Dislike

Reaching its prime
Age: 9 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

1071 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 »

CPU	GPU	SSD
Intel Core i5-13600K $315	Nvidia RTX 3060 $290	Crucial MX500 250GB $30
Intel Core i5-12600K $225	Nvidia RTX 3060-Ti $300	Samsung 850 Evo 120GB $86
Intel Core i5-12400F $150	Nvidia RTX 4070-Ti $800	Samsung 860 Evo 250GB $52

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $35	Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40	SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43	SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $67	G.SKILL Trident Z DDR4 3200 C14 4x16GB $381	SanDisk Ultra Fit 32GB $16

WD WDS400T2X0E

Black SN850X NVMe PCIe M.2 4TB

Average Bench: 553% (1^st of 1071)

Popular builds with this SSD

Outstanding average bench

Strengths

Terrible consistency

Weaknesses

Average Bench

Market Share (See Leaders)

Prices

CHOOSE A COMPONENT:

Motherboard: Asus ROG MAXIMUS Z790 HERO

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

UserBenchmark of the month

How it works

Group Test Results

Comments

Excellent (edit your comment) Add link

Excellent

Speed Comparisons

Frequently Asked Questions

Best User Rated

		$35021 mins
		$3792 mins

WD WDS400T2X0E

Black SN850X NVMe PCIe M.2 4TB

Average Bench: 553% (1st of 1071)

Popular builds with this SSD

Outstanding average bench

Strengths

Terrible consistency

Weaknesses

Average Bench

Market Share (See Leaders)

Prices

CHOOSE A COMPONENT:

Motherboard: Asus ROG MAXIMUS Z790 HERO

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

UserBenchmark of the month

How it works

Group Test Results

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Comments

Excellent (edit your comment) Add link

Excellent

Speed Comparisons

Frequently Asked Questions

Best User Rated

Feedback

Average Bench: 553% (1^st of 1071)