Average Bench: 36.8% (602nd of 1002)

more Based on 860 user benchmarks.  Models: WDC WD4000AAKS-00YGA0, WDC WD4000AAKS-00A7B0, WDC WD4000AAKS-00C8A0, WDC WD4000AAKS-00TMA0, WDC WD4000AAKS-00A7B, WDC WD4000AAKS-22YGA0, WDC WD40 00AAKS-00A7B0, WDC WD4000AAKS-00TMA, WDC WD4000AAKS-2, WDC WD4000AAKS-32YGA0, WDC WD40 00AAKS-00A7B, WDC WD40 00AAKS-22YGA0, WDC WD4000AAKS-0, WDC WD40 00AAKS-00YGA0, WDC WD40 00AAKS-00TMA, WDC WD4000AAKS-22YGA, WDC WD40 00AAKS-00YGA, WDC WD4000AAKS-00YGA, WDC WD40 00AAKS-00TMA0, WDC WD40 00AAKS-22YGA, WDC WD4000AAKS-22TMA0

Poor average bench

The WD Blue 400GB (2008) averaged 63.2% 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.


Avg. 4K Random Mixed IO Speed 0.34MB/s
Avg. 4K Random Write Speed 1.91MB/s

Good consistency

The range of scores (95th - 5th percentile) for the WD Blue 400GB (2008) is 21.1%. This is a relatively narrow range which indicates that the WD Blue 400GB (2008) performs reasonably consistently under varying real world conditions.


Avg. Sequential Write Speed 62MB/s
Avg. Sequential Mixed IO Speed 53.7MB/s

Average Bench

(Based on 860 samples)
Min Avg Max
45 Read 65.7 86.6
40 Write 62 79
24.2 Mixed 53.7 77.2
45.3% 60.5 MB/s
Min Avg Max
0.31 4K Read 0.54 0.72
0.97 4K Write 1.91 2.4
0.23 4K Mixed 0.34 0.43
95.3% 0.93 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
371GB free
Firmware: 12.01C01 Max speed: SATA 2.0 300 MB/s
Read 77.7
Write 77
Mixed 71.8
57% 75.5 MB/s
4K Read 0.61
4K Write 2.07
4K Mixed 0.37
105% 1.02 MB/s
66GB free
Firmware: 12.01C02 Max speed: SATA 2.0 300 MB/s
Read 69.2
Write 70.4
Mixed 71.9
53% 70.5 MB/s
4K Read 0.75
4K Write 2.35
4K Mixed 0.43
122% 1.18 MB/s
36GB free
Firmware: 12.01C01 Max speed: SATA 2.0 300 MB/s
Read 60
Write 72.5
Mixed 67.1
50% 66.5 MB/s
4K Read 0.41
4K Write 1.81
4K Mixed 0.36
91% 0.86 MB/s
230GB free
Firmware: 12.01C01 Max speed: SATA 2.0 300 MB/s
Read 65.3
Write 63.7
Mixed 28.1
38% 52.4 MB/s
4K Read 0.43
4K Write 1.72
4K Mixed 0.29
82% 0.81 MB/s
134GB free
Firmware: 01.03B01 Max speed: SATA 2.0 300 MB/s
Read 47.4
Write 65
Mixed 28.9
35% 47.1 MB/s
4K Read 0.72
4K Write 1.9
4K Mixed 0.47
118% 1.03 MB/s
860 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 9,727,707 HDDs tested.

Typical Blue 400GB (2008) Builds (Compare 12,133 builds) See popular component choices, score breakdowns and rankings.
Gaming 51%
Desktop 42%
Speed boat
Workstation 30%

Motherboard: Gigabyte GA-970A-DS3P - $70

EDIT WITH CUSTOM PC BUILDER Value: 80% - Very good Total price: $459

Popular Blue 400GB (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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
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Hard Drive Rankings (Price vs Performance) June 2018 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.
  • Fastest effective speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.


1002 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

 Best User Rated

The Best.
Intel Core i7-8700K $317Nvidia GTX 1070 $413Samsung 850 Evo 250GB $104
AMD Ryzen 5 1600 $160Nvidia GTX 1060-6GB $270Samsung 850 Evo 500GB $125
Intel Core i5-8600K $239AMD RX 480 $280Samsung 850 Pro 256GB $160
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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