Average Bench: 116% (1st of 1015)

Based on 946 user benchmarks.  Models: WDC WD6003FZBX-00K5WB0, WDC WD60 03FZBX-00K5WB0, WDC WD6003FZBX-00K5W, WDC WD6003FZBX-0

Outstanding average bench

The WD WD6003FZBX-00K5WB0 6TB averaged 16.3% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WD WD6003FZBX-00K5WB0 6TB near the top of the comparison list.


Avg. 4K Random Mixed IO Speed 1.68MB/s
Avg. 4K Random Write Speed 5.97MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the WD WD6003FZBX-00K5WB0 6TB is 66.6%. This is a particularly wide range which indicates that the WD WD6003FZBX-00K5WB0 6TB performs inconsistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 97.2MB/s
Avg. Sequential Read Speed 202MB/s

Average Bench

(Based on 946 samples)
Min Avg Max
112 Read 202 244
123 Write 204 248
60.8 Mixed 97.2 116
127 SusWrite 203 247
129% 176 MB/s
Min Avg Max
0.8 4K Read 1.51 1.98
3.96 4K Write 5.97 7.88
0.92 4K Mixed 1.68 1.9
359% 3.05 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
5.5TB free
Firmware: 01.01A01
SusWrite @10s intervals: 237 245 245 237 245 239 MB/s
Read 248
Write 248
Mixed 114
SusWrite 241
155% 213 MB/s
4K Read 1.6
4K Write 7.5
4K Mixed 1.6
383% 3.57 MB/s
4.5TB free
Firmware: 01.01A01
SusWrite @10s intervals: 218 231 228 228 233 228 MB/s
Read 239
Write 220
Mixed 77.2
SusWrite 228
139% 191 MB/s
4K Read 0.9
4K Write 2.9
4K Mixed 1.4
247% 1.73 MB/s
946 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 19,311,680 HDDs tested.

Typical WD6003FZBX-00K5WB0 6TB Builds (Compare 8,113 builds) See popular component choices, score breakdowns and rankings.
Gaming 133%
Desktop 149%
Workstation 138%

Motherboard: Asus ROG MAXIMUS XI HERO (WI-FI) - $275

EDIT WITH CUSTOM PC BUILDER Value: 54% - Above average Total price: $2,122

Popular WD6003FZBX-00K5WB0 6TB 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) August 2019 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.


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 i5-9400F $143Nvidia GTX 1660 $220Samsung 850 Evo 250GB $86
Intel Core i5-9600K $219AMD RX 5700 XT $400Samsung 850 Evo 500GB $102
AMD Ryzen 5 3600 $196Nvidia GTX 1660-Ti $270Samsung 850 Pro 256GB $97
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $78SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $42G.SKILL Trident Z DDR4 3200 C14 4x16GB $799SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $75Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 16GB $24
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