Average Bench: 118% (1st of 1015)

Based on 2,839 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 17.9% 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 1.68MB/s
Avg. 4K Random Write Speed 5.98MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the WD WD4005FZBX-00K5WB0 4TB is 63.6%. This is a particularly 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. Sequential Read Speed 204MB/s

Average Bench

(Based on 2,839 samples)
Min Avg Max
123 Read 204 242
124 Write 208 244
63.6 Mixed 96.4 110
131 SusWrite 205 242
130% 178 MB/s
Min Avg Max
0.88 4K Read 1.51 1.9
3.86 4K Write 5.98 7.9
1.1 4K Mixed 1.68 1.9
360% 3.05 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: 240 233 240 234 240 234 MB/s
Read 240
Write 239
Mixed 112
SusWrite 237
151% 207 MB/s
4K Read 1.8
4K Write 7.2
4K Mixed 1.8
408% 3.6 MB/s
3.5TB free
Firmware: 01.01A01
SusWrite @10s intervals: 238 243 239 244 239 243 MB/s
Read 234
Write 231
Mixed 92.8
SusWrite 241
146% 200 MB/s
4K Read 1.3
4K Write 5.4
4K Mixed 1.7
343% 2.8 MB/s
3.5TB free
Firmware: 01.01A01
SusWrite @10s intervals: 231 238 232 238 233 240 MB/s
Read 223
Write 222
Mixed 104
SusWrite 235
143% 196 MB/s
4K Read 1.5
4K Write 6
4K Mixed 1.7
362% 3.07 MB/s
2,839 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 22,989,950 HDDs tested.

Typical WD4005FZBX-00K5WB0 4TB Builds (Compare 11,725 builds) See popular component choices, score breakdowns and rankings.
Gaming 137%
Desktop 139%
Workstation 134%

Motherboard: Gigabyte Z390 AORUS MASTER - $270

EDIT WITH CUSTOM PC BUILDER Value: 53% - Above average Total price: $2,038

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.
  • - 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.
  • - Share your opinion by voting.
Hard Drive Rankings (Price vs Performance) January 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]


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.


15 months 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 i5-9600K $218Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $42
Intel Core i5-9400F $155Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $324Nvidia RTX 2060 $349Samsung 850 Pro 512GB $249
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $653SanDisk Ultra Fit 32GB $16
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