WD

WD6400AACS-00G8B1 640GB

WD6400AACS-00G8B1 640GB
BENCHMARKS (9,045)
MKT (0%)
BUILDS
(0)

Effective Speed -123%Effective Speed -123%Average Score -83%Read -122%, Write -111%, 4K Read -136%, 4K Write -1%, Mixed -66%, 4K Mixed -17%, SusWrite -125%Peak Score -91%Read -127%, Write -116%, 4K Read -185%, 4K Write 4%, Mixed -66%, 4K Mixed -14%, SusWrite -130%Value & Sentiment User Rating -19%, Market Share -15,294%Nice To Haves -9%Age -9%

Barracuda 7200.14 1TB

Average Bench: 39.6% (511^th of 1015)

Based on 9,045 user benchmarks. Models: WDC WD6400AACS-00G8B1, WDC WD64 00AACS-00M3B, WDC WD6400AACS-00G8B0, WDC WD6400AACS-0, WDC WD6400AACS-00M3B, WDC WD64 00AACS-32D6B, WDC WD6400AACS-00D6B1, WDC WD64 00AACS-00M3B0, WDC WD6400AACS-00A7B2, WDC WD6400AACS-00G8B, WDC WD6400AACS-00D6B, WDC WD64 00AACS-00G8B, WDC WD64 00AACS-00G8B0, WDC WD6400AACS-32D6B1, WDC WD64 00AACS-00D6B, WDC WD64 00AACS-00G8B1, WDC WD64 00AACS-00D6B1, WDC WD6400AACS-00M3B0

Poor: 26%Average: 39.6% Great: 49%

Popular builds with this HDD

Poor average bench

The WD WD6400AACS-00G8B1 640GB averaged 60.4% 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 0.74MB/s

Avg. 4K Random Write Speed 2.12MB/s

See where your HDD ranks →

Good consistency

The range of scores (95th - 5th percentile) for the WD WD6400AACS-00G8B1 640GB is 23.2%. This is a relatively narrow range which indicates that the WD WD6400AACS-00G8B1 640GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 49.5MB/s

Avg. Sustained Write Speed 67.5MB/s

Average Bench

(Based on 9,045 samples)

Rank 51139.6%

Min	Avg	Max
43	Read 70	88.1
40.3	Write 68.3	86.9
32.5	Mixed 49.5	59
40.2	SusWrite 67.5	85.4
47% 63.8 MB/s

Min	Avg	Max
0.4	4K Read 0.55	0.6
1.45	4K Write 2.12	2.6
0.6	4K Mixed 0.74	0.9
144% 1.14 MB/s

User Benchmarks

Bench

Sequential

Random 4k

Deep queue 4k

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

TUR-User, 10 days ago.

251GB free

Firmware: 05.04C05

SusWrite @10s intervals: 70 69 67 67 63 58 MB/s

44.4% Average

Write 81

Mixed 57.1

SusWrite 65.7

54% 73.2 MB/s

4K Read 0.5

4K Write 1.8

4K Mixed 0.7

132% 1 MB/s

SVK-User, 6 days ago.

51GB free

Firmware: 05.04C05

SusWrite @10s intervals: 73 77 78 76 77 76 MB/s

44.1% Average

Write 72.9

Mixed 53.7

SusWrite 76.3

52% 70 MB/s

4K Read 0.5

4K Write 2.6

4K Mixed 0.8

158% 1.3 MB/s

GBR-User, 4 days ago.

245GB free

Firmware: 05.04C05

SusWrite @10s intervals: 67 64 66 66 67 65 MB/s

42.4% Average

Write 82.7

Mixed 60.2

SusWrite 65.8

54% 72.6 MB/s

4K Read 0.6

4K Write 2.4

4K Mixed 0.7

147% 1.23 MB/s

RUS-User, 11 days ago.

44GB free

Firmware: 01.00A01

SusWrite @10s intervals: 52 52 46 49 57 48 MB/s

39.3% Below average

Write 86.8

Mixed 58.4

SusWrite 50.5

52% 70.4 MB/s

4K Read 0.7

4K Write 1.7

4K Mixed 0.8

150% 1.07 MB/s

SVK-User, 1 day ago.

103GB free

Firmware: 05.04C05

SusWrite @10s intervals: 46 44 44 46 46 45 MB/s

31.8% Below average

Write 59.8

Mixed 51.2

SusWrite 45.2

41% 55.3 MB/s

4K Read 0.5

4K Write 2.4

4K Mixed 0.7

143% 1.2 MB/s

9,045 MORE »

Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 53,304,756 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 WD6400AACS-00G8B1 640GB Builds (Compare 13 builds) See popular component choices, score breakdowns and rankings

Gaming 5%

Tree trunk

Desktop 39%

Jet ski

Workstation 4%

Tree trunk

System: Medionpc MS-7501

CPU
Phenom X3 8450AMDBench 39%, 1,789 samples	3x
Athlon 7750AMDBench 39%, 2,273 samples	3x
Athlon II X3 425AMDBench 42%, 1,367 samples	2x

GPU
GeForce GT 710NvidiaBench 3%, 187,161 samples	3x
Radeon HD 4300ATIBench 1%, 14,988 samples	3x
Radeon HD 5450AMDBench 1%, 66,079 samples	2x

SSD
A400 120GBKingston $32Bench 61%, 166,392 samples	2x
520 Series 240GBIntel $139Bench 78%, 12,595 samples	1x
HG6 mSATA 128GBToshibaBench 71%, 3,217 samples	1x

RAM
4x2GBUnknownBench 25%, 183,252 samples	4x
2x2GBUnknownBench 20%, 446,702 samples	3x
6GBUnknownBench 25%, 111,301 samples	2x

EDIT WITH CUSTOM PC BUILDER

Value: 11% - Very poor

Total price: $32

Popular WD6400AACS-00G8B1 640GB systems:

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

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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?

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Hard Drives

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ALL FAQs »

CPU	GPU	SSD
Intel Core i5-13600K $275	Nvidia RTX 4060 $300	Crucial MX500 250GB $40
Intel Core i5-12400F $134	Nvidia RTX 4060-Ti $385	Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184	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) $35	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

WD6400AACS-00G8B1 640GB