Average Bench: 36.4% (595th of 984)

more Based on 741 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 63.5% 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 1.89MB/s

Very good consistency

The range of scores (95th - 5th percentile) for the WD Blue 400GB (2008) is just 19.6%. 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 61.5MB/s
Avg. Sequential Mixed IO Speed 53MB/s

Average Bench

(Based on 741 samples)
Min Avg Max
43.6 Read 65.1 82.5
38.8 Write 61.5 77.1
24 Mixed 53 76.3
44.8% 59.9 MB/s
Min Avg Max
0.3 4K Read 0.54 0.72
0.81 4K Write 1.89 2.38
0.23 4K Mixed 0.34 0.43
94.8% 0.92 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
366GB free
Firmware: 01.03B01 Max speed: SATA 2.0 300 MB/s
Read 92.8
Write 84.9
Mixed 82.4
65% 86.7 MB/s
4K Read 0.78
4K Write 2.4
4K Mixed 0.35
116% 1.18 MB/s
303GB free
Firmware: 01.03B01 Max speed: SATA 2.0 300 MB/s
Read 86.9
Write 88.1
Mixed 55.3
57% 76.8 MB/s
4K Read 0.57
4K Write 2.71
4K Mixed 0.4
118% 1.23 MB/s
371GB free
Firmware: 12.01C02 Max speed: SATA 2.0 300 MB/s
Read 69.3
Write 69.6
Mixed 72.2
53% 70.4 MB/s
4K Read 0.66
4K Write 2.08
4K Mixed 0.38
109% 1.04 MB/s
52GB free
Firmware: 12.01C01 Max speed: SATA 2.0 300 MB/s
Read 67.3
Write 68.2
Mixed 72.8
52% 69.4 MB/s
4K Read 0.47
4K Write 1.6
4K Mixed 0.24
76% 0.77 MB/s
244GB free
Firmware: 12.01C02 Max speed: SATA 2.0 300 MB/s
Read 65.8
Write 62.2
Mixed 62.5
48% 63.5 MB/s
4K Read 0.64
4K Write 2.11
4K Mixed 0.37
107% 1.04 MB/s
5GB free
Firmware: 12.01C02 Max speed: SATA 2.0 300 MB/s
Read 65.9
Write 60.7
Mixed 49.2
44% 58.6 MB/s
4K Read 0.47
4K Write 1.79
4K Mixed 0.32
88% 0.86 MB/s
147GB free
Firmware: 12.01C02 Max speed: SATA 2.0 300 MB/s
Read 62.4
Write 62.4
Mixed 27.8
38% 50.9 MB/s
4K Read 0.65
4K Write 2.17
4K Mixed 0.28
99% 1.04 MB/s
741 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 7,861,115 HDDs tested.

Typical Blue 400GB (2008) Builds (Compare 9,219 builds) See popular component choices, score breakdowns and rankings.
Gaming 34%
Sail boat
Desktop 42%
Speed boat
Workstation 29%

Motherboard: Gigabyte GA-970A-DS3P - $80

EDIT WITH CUSTOM PC BUILDER Value: 62% - Good Total price: $410

Popular Blue 400GB (2008) compatible motherboards:

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Hard Drive Rankings (Price vs Performance) February 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.


984 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 $330Nvidia GTX 1070 $430Samsung 850 Evo 250GB $88
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $150
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $146
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $184SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $79G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $42Corsair Vengeance LPX DDR4 3200 C16 2x8GB $206SanDisk Extreme 16GB $18
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