WD WD6401AALS

Black 640GB (2008)

Black 640GB (2008)
BENCHMARKS (12,201)
MKT (0.1%)
BUILDS
(0)
BUY • $80

Effective Speed -80%Effective Speed -80%Average User Bench -47%Read -77%, Write -69%, 4K Read -67%, 4K Write -4%, Mixed -26%, 4K Mixed 2%, SusWrite -84%Peak Lab Bench -46%Read -77%, Write -73%, 4K Read -88%, 4K Write 7%, Mixed -22%, 4K Mixed 8%, SusWrite -80%Value & Sentiment -1,345%User Rating -61%, Market Share -4,813%, Price 15%, Value -522%Nice To Haves -19%Age -19%

Barracuda 7200.14 1TB

Average Bench: 49.2% (318^th of 1015)

Based on 12,201 user benchmarks. Models: WDC WD6401AALS-00L3B2, WDC WD6401AALS-00L3B, WDC WD64 01AALS-00J7B, WDC WD64 01AALS-00E3A, WDC WD64 01AALS-00E8B0, WDC WD6401AALS-00E3A, WDC WD64 01AALS-00E3A0, WDC WD6401AALS-00E8B0, WDC WD6401AALS-00J7B, WDC WD64 01AALS-00E8B, WDC WD64 01AALS-00L3B2, WDC WD6401AALS-00E3A0, WDC WD6401AALS-00J7B1, WDC WD6401AALS-00E8B, WDC WD6401AALS-00J7B0, WDC WD64 01AALS-00J7B0, WDC WD6401AALS-0, WDC WD64 01AALS-00J7B1, WDC WD64 01AALS-00L3B

Poor: 29%Average: 49.2% Great: 64%

Popular builds with this HDD

Below average average bench

The WD Black 640GB (2008) averaged 50.7% 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 0.9MB/s

Avg. 4K Random Write Speed 2.06MB/s

See where your HDD ranks →

Above average consistency

The range of scores (95th - 5th percentile) for the WD Black 640GB (2008) is 34.4%. This is a relatively narrow range which indicates that the WD Black 640GB (2008) performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 64.2MB/s

Avg. Sustained Write Speed 81.6MB/s

Average Bench

(Based on 12,201 samples)

Rank 31849.2%

Min	Avg	Max
56	Read 89.6	114
51	Write 85.3	109
39.5	Mixed 64.2	80.3
38	SusWrite 81.6	109
59.2% 80.2 MB/s

Min	Avg	Max
0.4	4K Read 0.76	0.9
1.1	4K Write 2.06	2.7
0.5	4K Mixed 0.9	1.1
170% 1.24 MB/s

User Benchmarks

Bench

Sequential

Random 4k

Deep queue 4k

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

FRA-User, 2 hrs ago.

930GB free

Firmware: 05.01D05

SusWrite @10s intervals: 191 192 194 200 198 195 MB/s

115% Outstanding

Write 186

Mixed 98

SusWrite 195

125% 171 MB/s

4K Read 1.8

4K Write 3.9

4K Mixed 1.5

314% 2.4 MB/s

DEU-User, 8 hrs ago.

110GB free

Firmware: 05.01D05

SusWrite @10s intervals: 107 107 107 109 109 110 MB/s

66% Good

Write 103

Mixed 85

SusWrite 108

77% 104 MB/s

4K Read 1

4K Write 2.2

4K Mixed 0.9

182% 1.37 MB/s

USA-User, 33 mins ago.

596GB free

Firmware: 01.03B01

SusWrite @10s intervals: 108 108 110 110 110 111 MB/s

63.6% Good

Write 96.7

Mixed 77

SusWrite 110

73% 98.8 MB/s

4K Read 0.7

4K Write 2.1

4K Mixed 0.8

157% 1.2 MB/s

USA-User, 10 hrs ago.

471GB free

Firmware: 01.03B01

SusWrite @10s intervals: 107 108 107 108 106 108 MB/s

63.5% Good

Write 102

Mixed 78.3

SusWrite 107

74% 100 MB/s

4K Read 0.6

4K Write 2

4K Mixed 0.9

162% 1.17 MB/s

DEU-User, 6 hrs ago.

106GB free

Firmware: 01.03B01

SusWrite @10s intervals: 105 106 108 109 108 108 MB/s

61.3% Good

Write 103

Mixed 76.6

SusWrite 107

72% 98.3 MB/s

4K Read 0.7

4K Write 1.9

4K Mixed 1.1

187% 1.23 MB/s

USA-User, 7 hrs ago.

335GB free

Firmware: 01.03B01

SusWrite @10s intervals: 86 87 87 92 92 93 MB/s

55.4% Above average

Write 100

Mixed 76.9

SusWrite 89.5

68% 92.5 MB/s

4K Read 0.9

4K Write 2

4K Mixed 1

186% 1.3 MB/s

USA-User, 7 hrs ago.

278GB free

Firmware: 01.03B01

SusWrite @10s intervals: 88 90 92 95 96 95 MB/s

54.4% Above average

Write 93.5

Mixed 66.4

SusWrite 92.7

64% 87.3 MB/s

4K Read 0.9

4K Write 1.9

4K Mixed 0.9

173% 1.23 MB/s

ESP-User, 1 hr ago.

91GB free

Firmware: 01.03B01

SusWrite @10s intervals: 72 86 88 93 92 93 MB/s

54.1% Above average

Write 88.7

Mixed 71

SusWrite 87.3

64% 87 MB/s

4K Read 0.9

4K Write 1.9

4K Mixed 0.9

173% 1.23 MB/s

12,201 MORE »

Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,764,346 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 Black 640GB (2008) Builds (Compare 16,306 builds) See popular component choices, score breakdowns and rankings.

Gaming 50%

Yacht

Desktop 65%

Destroyer

Workstation 34%

Sail boat

Motherboard: Asrock Z77 Extreme4 - $167

CPU
Core i5-3570KIntel $300Bench 67%, 132,550 samples	7,473x
Core i7-3770KIntel $138Bench 68%, 99,740 samples	3,111x
Core i7-3770Intel $198Bench 64%, 150,355 samples	1,384x

GPU
GTX 970Nvidia $399Bench 52%, 512,504 samples	1,666x
GTX 1070Nvidia $415Bench 78%, 677,712 samples	1,350x
GTX 1060-6GBNvidia $280Bench 57%, 752,541 samples	1,228x

SSD
850 Evo 250GBSamsung $55Bench 105%, 507,744 samples	1,074x
850 Evo 500GBSamsung $97Bench 111%, 442,547 samples	992x
860 Evo 500GBSamsung $60Bench 106%, 224,064 samples	396x

RAM
Vengeance DDR3 1600 C9 2x4GBCorsairBench 49%, 50,130 samples	687x
Vengeance DDR3 1600 C9 4x4GBCorsairBench 53%, 22,620 samples	380x
Vengeance DDR3 1600 C10 2x8GBCorsairBench 55%, 23,060 samples	338x

EDIT WITH CUSTOM PC BUILDER

Value: 44% - Average

Total price: $921

Popular Black 640GB (2008) compatible motherboards:

How Fast Is Your HDD? (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.

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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.
- 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.
- Share your opinion by voting.

Hard Drive Rankings (Price vs Performance) December 2019 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

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ALL FAQs »

CPU	GPU	SSD
Intel Core i5-9400F $145	Nvidia GTX 1660S (Super) $240	Crucial MX500 250GB $44
Intel Core i5-9600K $200	Nvidia RTX 2060 $324	Samsung 850 Evo 120GB $150
Intel Core i7-9700K $360	AMD RX 590 $180	Samsung 850 Pro 512GB $230

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $37	Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80	SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $58	SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80	G.SKILL Trident Z DDR4 3200 C14 4x16GB $613	SanDisk Extreme 16GB $24

WD WD6401AALS

Black 640GB (2008)

Average Bench: 49.2% (318^th of 1015)

Popular builds with this HDD

Below average average bench

Strengths

Above average consistency

Weaknesses

Average Bench

Market Share (See Leaders)

Prices

CHOOSE A COMPONENT:

Motherboard: Asrock Z77 Extreme4 - $167

Popular Black 640GB (2008) compatible motherboards:

UserBenchmark of the month

How it works

Group Test Results

Comments

Speed Comparisons

Frequently Asked Questions

Best User Rated

WD WD6401AALS

Black 640GB (2008)

Average Bench: 49.2% (318th of 1015)

Popular builds with this HDD

Below average average bench

Strengths

Above average consistency

Weaknesses

Average Bench

Market Share (See Leaders)

Prices

CHOOSE A COMPONENT:

Motherboard: Asrock Z77 Extreme4 - $167

Popular Black 640GB (2008) compatible motherboards:

UserBenchmark of the month

How it works

Group Test Results

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Comments

Speed Comparisons

Frequently Asked Questions

Best User Rated

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Average Bench: 49.2% (318^th of 1015)