Average Bench: 118% (1st of 1015)

Based on 1,253 user benchmarks.  Models: WDC WD6003FZBX-00K5WB0, WDC WD60 03FZBX-00K5WB0, WDC WD6003FZBX-00K5W, WDC WD6003FZBX-0, WDC WD6003FZBX-00GXAB0

Outstanding average bench

The WD WD6003FZBX-00K5WB0 6TB averaged 18.0% 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 1.69MB/s
Avg. 4K Random Write Speed 5.89MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the WD WD6003FZBX-00K5WB0 6TB is 53.4%. This is a relatively wide range which indicates that the WD WD6003FZBX-00K5WB0 6TB performs inconsistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 97MB/s
Avg. Sequential Read Speed 204MB/s

Average Bench

(Based on 1,253 samples)
Min Avg Max
127 Read 204 243
146 Write 208 245
61.7 Mixed 97 114
138 SusWrite 206 246
131% 179 MB/s
Min Avg Max
0.8 4K Read 1.49 2
2.99 4K Write 5.89 7.71
1.19 4K Mixed 1.69 2
359% 3.02 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
4.5TB free
Firmware: 01.01A01
SusWrite @10s intervals: 247 243 238 245 243 240 MB/s
Read 240
Write 242
Mixed 106
SusWrite 243
151% 208 MB/s
4K Read 1.5
4K Write 6
4K Mixed 1.6
351% 3.03 MB/s
3.5TB free
Firmware: 01.01A01
SusWrite @10s intervals: 205 210 207 206 211 208 MB/s
Read 206
Write 205
Mixed 97.7
SusWrite 208
131% 179 MB/s
4K Read 1.6
4K Write 7
4K Mixed 1.5
363% 3.37 MB/s
1,253 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,316,345 HDDs tested.

Typical WD6003FZBX-00K5WB0 6TB Builds (Compare 10,767 builds) See popular component choices, score breakdowns and rankings.
Gaming 138%
Desktop 149%
Workstation 140%

Motherboard: Asus ROG MAXIMUS XI HERO (WI-FI) - $281

EDIT WITH CUSTOM PC BUILDER Value: 56% - Above average Total price: $2,088

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) November 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 $140Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $45
Intel Core i5-9600K $195AMD RX 590 $185Samsung 850 Evo 120GB $150
Intel Core i7-9700K $340Nvidia RTX 2060 $325Samsung 860 Evo 250GB $51
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3000 C15 2x8GB $71SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $609SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85Corsair Vengeance LPX DDR4 3200 C16 2x8GB $68SanDisk Extreme 16GB $24
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer Feedback