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WD WD6401AALS

Black 640GB (2008)

▲ 500 ▼

Release date ≤ Q4 2013.

Average Bench: 50.9% (294th of 1014)

more Based on 14,853 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: 35%Average: 50.9% Great: 65%

Popular builds with this HDD

Average average bench

The WD Black 640GB (2008) averaged 49.0% 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 2.11MB/s

Good consistency

The range of scores (95th - 5th percentile) for the WD Black 640GB (2008) is 29.2%. 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 65.4MB/s
Avg. Sustained Write Speed 84MB/s
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Average Bench

(Based on 14,853 samples)
Rank 29450.9%
Min Avg Max
61.4 Read 93.1 117
57 Write 88.4 111
43.8 Mixed 65.4 81.5
51 SusWrite 84 111
61% 82.7 MB/s
Min Avg Max
0.5 4K Read 0.78 0.9
1.4 4K Write 2.11 2.7
0.6 4K Mixed 0.9 1.1
172% 1.27 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
371GB free
Firmware: 3B01
SusWrite @10s intervals: 103 103 103 103 104 104 MB/s
60.9% Good
Read 109
Write 95
Mixed 82
SusWrite 103
72% 97.2 MB/s
4K Read 0.7
4K Write 2.3
4K Mixed 1
183% 1.33 MB/s
534GB free
Firmware: 01.03B01
SusWrite @10s intervals: 83 83 85 85 85 84 MB/s
56.9% Above average
Read 114
Write 93.5
Mixed 64.3
SusWrite 84
66% 88.9 MB/s
4K Read 0.8
4K Write 2.1
4K Mixed 1.1
194% 1.33 MB/s
319GB free (System drive)
Firmware: 01.03B01
SusWrite @10s intervals: 67 61 79 53 83 92 MB/s
52.4% Above average
Read 110
Write 99.1
Mixed 78.3
SusWrite 72.5
67% 89.9 MB/s
4K Read 0.8
4K Write 2
4K Mixed 1
182% 1.27 MB/s
114GB free
Firmware: 05.00K05
SusWrite @10s intervals: 75 74 74 75 76 75 MB/s
47.1% Average
Read 89
Write 87.5
Mixed 64.1
SusWrite 74.6
58% 78.8 MB/s
4K Read 0.9
4K Write 2.4
4K Mixed 1
193% 1.43 MB/s
543GB free
Firmware: 01.03B01
SusWrite @10s intervals: 69 71 73 73 73 72 MB/s
42.5% Average
Read 76
Write 71.2
Mixed 52
SusWrite 71.6
50% 67.7 MB/s
4K Read 0.9
4K Write 1.9
4K Mixed 1
184% 1.27 MB/s
14,853 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 31,012,120 HDDs tested.

 Prices

AmazonUS $661 month
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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 640GB (2008) Builds (Compare 26,297 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 102%
UFO
Desktop
Desktop 94%
Nuclear submarine
Workstation
Workstation 103%
UFO

Motherboard: Asus TUF GAMING X570-PLUS (WI-FI) - $188

CPU
Ryzen 7 3700XAMD  $284Bench 87%, 292,545 samples9,043x
Ryzen 5 3600AMD  $175Bench 84%, 451,203 samples5,159x
Ryzen 9 3900XAMD  $430Bench 89%, 130,634 samples4,458x
GPU
RTX 2070S (Super)Nvidia  $505Bench 113%, 284,999 samples5,226x
RX 5700-XTAMD  $399Bench 106%, 222,053 samples3,916x
RTX 2080S (Super)Nvidia  $770Bench 131%, 113,144 samples2,094x
SSD
970 Evo Plus NVMe PCIe M.2 500GBSamsung  $90Bench 288%, 172,037 samples1,474x
970 Evo NVMe PCIe M.2 500GBSamsung  $80Bench 274%, 224,470 samples1,358x
970 Evo NVMe PCIe M.2 1TBSamsung  $164Bench 307%, 124,766 samples1,245x
RAM
Vengeance LPX DDR4 3200 C16 2x8GBCorsair  $69Bench 86%, 300,565 samples1,284x
F4 DDR4 3600 C16 2x8GBG.SKILLBench 88%, 18,276 samples1,230x
Vengeance RGB PRO DDR4 3200 C16 2x16GBCorsair  $143Bench 87%, 48,683 samples1,099x
EDIT WITH CUSTOM PC BUILDER Value: 68% - Good Total price: $1,136

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.

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.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
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Hard Drive Rankings (Price vs Performance) September 2020 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]

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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

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Speed Comparisons

vs Seagate Barracuda 1TB (2016)
vs WD Blue 1TB (2012)
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vs Seagate Barracuda 2TB (2016)
vs WD Black 1TB (2013)
vs Seagate Barracuda 7200.14 1TB
vs Seagate Barracuda 4TB (2016)
vs WD Black 2TB (2013)
vs WD Black 6TB (2015)

1014 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 »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-9600K $195Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $44
Intel Core i5-9400F $140Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $290Nvidia RTX 2070S (Super) $505Samsung 860 Evo 250GB $42
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $69SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 32GB $30
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Extreme 16GB $28
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