Average Bench: 116% (1st of 1015)

Based on 6,838 user benchmarks.  Models: WDC WD4005FZBX-00K5WB0, WDC WD40 05FZBX-00K5WB0, WDC WD4005FZBX-00K5W, WDC WD4005FZBX-0, WDC WD40 05FZBX-00K5W

Outstanding average bench

The WD WD4005FZBX-00K5WB0 4TB averaged 15.8% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WD WD4005FZBX-00K5WB0 4TB near the top of the comparison list.


Avg. 4K Random Mixed IO Speed 1.69MB/s
Avg. 4K Random Write Speed 6.01MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the WD WD4005FZBX-00K5WB0 4TB is 57.4%. This is a relatively wide range which indicates that the WD WD4005FZBX-00K5WB0 4TB performs inconsistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 96.4MB/s
Avg. Sustained Write Speed 199MB/s

Average Bench

(Based on 6,838 samples)
Min Avg Max
135 Read 204 240
143 Write 204 241
71.7 Mixed 96.4 113
121 SusWrite 199 242
128% 176 MB/s
Min Avg Max
1.1 4K Read 1.54 2
3.8 4K Write 6.01 7.8
1.2 4K Mixed 1.69 1.9
363% 3.08 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
3.5TB free
Firmware: 01.01A01
SusWrite @10s intervals: 237 248 236 248 236 249 MB/s
Read 240
Write 246
Mixed 114
SusWrite 242
154% 210 MB/s
4K Read 1.6
4K Write 5.2
4K Mixed 1.7
352% 2.83 MB/s
2.5TB free
Firmware: 01.01A01
SusWrite @10s intervals: 212 226 235 226 238 225 MB/s
Read 222
Write 224
Mixed 106
SusWrite 227
142% 195 MB/s
4K Read 1.8
4K Write 5.7
4K Mixed 1.7
370% 3.07 MB/s
2.5TB free
Firmware: 01.01A01
SusWrite @10s intervals: 208 225 212 221 215 221 MB/s
Read 216
Write 225
Mixed 96.9
SusWrite 217
138% 189 MB/s
4K Read 1.3
4K Write 7.5
4K Mixed 1.7
382% 3.5 MB/s
6,838 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 39,757,981 HDDs tested.

Typical WD4005FZBX-00K5WB0 4TB Builds (Compare 35,017 builds) See popular component choices, score breakdowns and rankings.
Gaming 116%
Desktop 101%
Workstation 110%

Motherboard: Asus PRIME Z390-A - $225

EDIT WITH CUSTOM PC BUILDER Value: 70% - Very good Total price: $1,276

Popular WD4005FZBX-00K5WB0 4TB 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

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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.
Hard Drive Rankings (Price vs Performance) August 2021 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.


Added n/a ago.


2 years ago.

Best mechanical drive line for civilians in my opinion. The cache is RIDICULOUS

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.
Intel Core i5-11600K $270Nvidia RTX 3070 $500Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3060-Ti $400Samsung 860 Evo 250GB $52
Intel Core i7-10700K $317Nvidia RTX 3080 $700Samsung 850 Evo 120GB $183
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $80SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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