Average Bench: 21% (959th of 1015)

more Based on 98 user benchmarks.  Models: WDC WD400JB-00FMA0, WDC WD400JB-00JJC0, WDC WD400JB-00ENA0, WDC WD400JB-32ENA0, WDC WD400JB-00JJA0, WDC WD400JB-00ETA0, WDC WD40 0JB-00JJA0, WDC WD40 0JB-00ENA0, WDC WD400JB-22JJC0

Very poor average bench

The WD WD400JB-00FMA0 40GB averaged 78.9% 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 0.51MB/s
Avg. 4K Random Write Speed 1.23MB/s

Good consistency

The range of scores (95th - 5th percentile) for the WD WD400JB-00FMA0 40GB is 21.7%. This is a relatively narrow range which indicates that the WD WD400JB-00FMA0 40GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 28.7MB/s
Avg. Sequential Mixed IO Speed 28.2MB/s
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Average Bench

(Based on 98 samples)
Min Avg Max
15.4 Read 37.4 54.1
16.5 Write 38.6 54.3
14.3 Mixed 28.2 45.1
8.37 SusWrite 28.7 51.6
24.6% 33.2 MB/s
Min Avg Max
0.1 4K Read 0.48 0.7
0.32 4K Write 1.23 1.7
0.15 4K Mixed 0.51 0.9
99% 0.74 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
28GB free
Firmware: 13.03G13
SusWrite @10s intervals: 50 51 51 53 52 52 MB/s
Read 43.6
Write 47.5
Mixed 32.1
SusWrite 51.6
32% 43.7 MB/s
4K Read 0.5
4K Write 1.1
4K Mixed 0.7
119% 0.77 MB/s
4GB free
Firmware: 05.01C05
SusWrite @10s intervals: 51 53 51 51 52 53 MB/s
Read 36.3
Write 36
Mixed 27.7
SusWrite 51.7
28% 37.9 MB/s
4K Read 0.6
4K Write 1.5
4K Mixed 0.9
153% 1 MB/s
34GB free
Firmware: 13.03G13
SusWrite @10s intervals: 50 54 49 51 51 51 MB/s
Read 34.8
Write 35.8
Mixed 25.5
SusWrite 50.9
27% 36.8 MB/s
4K Read 0.8
4K Write 0.8
4K Mixed 0.8
137% 0.8 MB/s
34GB free
Firmware: 13.03G13
SusWrite @10s intervals: 46 52 50 51 51 51 MB/s
Read 31.5
Write 31.7
Mixed 22.4
SusWrite 50.2
25% 34 MB/s
4K Read 0.9
4K Write 0.5
4K Mixed 0.7
124% 0.7 MB/s
37GB free
Firmware: 77.07W77
SusWrite @10s intervals: 25 30 30 24 15 17 MB/s
Read 50.1
Write 54.9
Mixed 31.9
SusWrite 23.5
30% 40.1 MB/s
4K Read 0.6
4K Write 1.6
4K Mixed 0.9
155% 1.03 MB/s
98 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 53,306,314 HDDs tested

Typical WD400JB-00FMA0 40GB Builds (Compare 29 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 4%
Tree trunk
Desktop
Desktop 48%
Yacht
Workstation
Workstation 4%
Tree trunk

Motherboard: Gigabyte GA-MA78GM-S2H

EDIT WITH CUSTOM PC BUILDER Value: 49% - Average Total price: $212

Popular WD400JB-00FMA0 40GB compatible motherboards:

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.

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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
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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]

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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

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

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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