WD

WD4000AAJB-00UHA0 400GB

WD4000AAJB-00UHA0 400GB
BENCHMARKS (38)
MKT (%)
BUILDS
(0)

Effective Speed -178%Effective Speed -178%Average Score -127%Read -174%, Write -159%, 4K Read -150%, 4K Write -18%, Mixed -119%, 4K Mixed -37%, SusWrite -231%Peak Score -96%Read -160%, Write -147%, 4K Read -144%, 4K Write -5%, Mixed -42%, 4K Mixed -2%, SusWrite -169%Value & Sentiment -19%User Rating -19%Nice To Haves +7% Age 7%

Barracuda 7200.14 1TB

Average Bench: 31.7% (676^th of 1015)

Based on 38 user benchmarks. Models: WDC WD4000AAJB-00UHA0, WDC WD4000AAJB-00YRA0, WDC WD4000AAJB-00YRA, WDC WD40 00AAJB-00YRA0, WDC WD40 00AAJB-00UHA0

Poor: 12%Average: 31.7% Great: 41%

Popular builds with this HDD

Poor average bench

The WD WD4000AAJB-00UHA0 400GB averaged 68.2% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.

Strengths

Avg. 4K Random Mixed IO Speed 0.63MB/s

Avg. 4K Random Write Speed 1.82MB/s

See where your HDD ranks →

Good consistency

The range of scores (95th - 5th percentile) for the WD WD4000AAJB-00UHA0 400GB is 28.3%. This is a relatively narrow range which indicates that the WD WD4000AAJB-00UHA0 400GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 37.5MB/s

Avg. Sustained Write Speed 45.8MB/s

Average Bench

(Based on 38 samples)

Rank 67631.7%

Min	Avg	Max
2.2	Read 56.6	76.7
2.2	Write 55.6	76.1
2.5	Mixed 37.5	68.9
2.5	SusWrite 45.8	73.2
36% 48.8 MB/s

Min	Avg	Max
0.1	4K Read 0.52	0.7
0.2	4K Write 1.82	2.4
0.09	4K Mixed 0.63	1
126% 0.99 MB/s

User Benchmarks

Bench

Sequential

Random 4k

Deep queue 4k

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

USA-User, 3 years ago.

66GB free

Firmware: 210.

SusWrite @10s intervals: 65 64 65 64 65 65 MB/s

35.2% Below average

Write 58.5

Mixed 39.2

SusWrite 64.7

40% 54.9 MB/s

4K Read 0.7

4K Write 2.3

4K Mixed 0.9

172% 1.3 MB/s

USA-User, 3 years ago.

65GB free

Firmware: 210.

SusWrite @10s intervals: 63 64 64 64 64 65 MB/s

33.8% Below average

Write 52.2

Mixed 37.7

SusWrite 64

38% 51.8 MB/s

4K Read 0.6

4K Write 2.2

4K Mixed 0.9

166% 1.23 MB/s

ARG-User, 3 years ago.

323GB free (System drive)

Firmware: 12.01C02

SusWrite @10s intervals: 20 48 42 55 57 28 MB/s

32.3% Below average

Write 47

Mixed 35.6

SusWrite 41.7

36% 48.6 MB/s

4K Read 0.6

4K Write 1.8

4K Mixed 1

169% 1.13 MB/s

ARG-User, 3 years ago.

347GB free (System drive)

Firmware: 12.01C02

SusWrite @10s intervals: 56 49 59 62 63 65 MB/s

31.9% Below average

Write 63.7

Mixed 40.5

SusWrite 59.1

40% 53.8 MB/s

4K Read 0.6

4K Write 1.8

4K Mixed 0.9

158% 1.1 MB/s

USA-User, 3 months ago.

372GB free

Firmware: 07.01N01

SusWrite @10s intervals: 33 32 31 32 32 31 MB/s

29.5% Poor

Write 67.6

Mixed 44.2

SusWrite 31.9

40% 53.5 MB/s

4K Read 0.7

4K Write 2.5

4K Mixed 1

187% 1.4 MB/s

DEU-User, 3 years ago.

251GB free

Firmware: 12.01C02

SusWrite @10s intervals: 3.6 3.7 3.7 3.7 3.7 3.7 MB/s

2.16% Terrible

Write 3.5

Mixed 3.5

SusWrite 3.7

3% 3.47 MB/s

4K Read 0.5

4K Write 1.5

4K Mixed 0.7

126% 0.9 MB/s

38 MORE »

Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 53,312,195 HDDs 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 WD4000AAJB-00UHA0 400GB Builds (Compare 300 builds) See popular component choices, score breakdowns and rankings

Gaming 69%

Battle cruiser

Desktop 87%

Aircraft carrier

Workstation 58%

Gunboat

Motherboard: Asrock Z170M Extreme4

CPU
Core i7-6700KIntel $180Bench 81%, 588,978 samples	89x
Core i5-6600KIntel $81Bench 72%, 342,244 samples	77x
Core i5-6500Intel $67Bench 64%, 241,476 samples	33x

GPU
GTX 1070Nvidia $132Bench 80%, 1,459,281 samples	40x
GTX 1060-6GBNvidia $117Bench 56%, 1,368,019 samples	34x
GTX 1080Nvidia $400Bench 102%, 1,082,454 samples	22x

SSD
850 Evo 250GBSamsung $100Bench 103%, 951,591 samples	15x
Blue SN550 NVMe PCIe M.2 1TBWD $74Bench 228%, 180,890 samples	12x
850 Evo 500GBSamsung $109Bench 112%, 695,664 samples	11x

RAM
Vengeance LPX DDR4 3000 C15 2x8GBCorsair $43Bench 82%, 606,405 samples	16x
Vengeance LPX DDR4 3200 C16 2x8GBCorsair $40Bench 85%, 653,654 samples	13x
Ripjaws V DDR4 2400 C15 2x8GBG.SKILL $40Bench 71%, 98,777 samples	13x

EDIT WITH CUSTOM PC BUILDER

Value: 95% - Outstanding

Total price: $455

Popular WD4000AAJB-00UHA0 400GB compatible motherboards:

How Fast Is Your HDD? (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.

UserBenchmark of the month

Gaming

Desktop

ProGaming

CPU

GPU

SSD

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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

Hard Drive Rankings (Price vs Performance) April 2024 HDD Rankings

We calculate effective speed which measures performance for typical consumers. Effective speed is adjusted by current cost per GB to yield value for money. 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 HDDs. ^[HDrivePro]

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.

1015 Drives (Compared) Thousands of user benchmarks compiled into one comparison list

See how consistently different HDDs 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?

What is 4K random write speed?

What is 4K random read speed?

What is AS SSD real world copy speed?

How big is 16GB?

What does MBps mean?

Hard Drives

What is the Hard Drive value for money rating?

What is effective Hard Drive speed?

ALL FAQs »

CPU	GPU	SSD
Intel Core i5-13600K $279	Nvidia RTX 4060 $300	Crucial MX500 250GB $40
Intel Core i5-12400F $133	Nvidia RTX 4060-Ti $385	Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182	Nvidia RTX 4070 $409	Samsung 860 Evo 250GB $52

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $39	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) $51	G.SKILL Trident Z DDR4 3200 C14 4x16GB $351	SanDisk Ultra Fit 32GB $16

WD

WD4000AAJB-00UHA0 400GB