Average Bench: 96.3% (7th of 1015)

Based on 275 user benchmarks.  Models: WDC WD120EMFZ-11A6JA0, WDC WD12 0EMFZ-11A6JA0, WDC WD120EMFZ-11A6JA, WDC WD120EMFZ-11, WDC WD12 0EMFZ-11A6JA

Excellent average bench

The WD WD120EMFZ-11A6JA0 12TB averaged just 3.6% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the WD WD120EMFZ-11A6JA0 12TB near the top of the comparison list.


Avg. 4K Random Mixed IO Speed 2.09MB/s
Avg. 4K Random Read Speed 4.52MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the WD WD120EMFZ-11A6JA0 12TB is 54.1%. This is a relatively wide range which indicates that the WD WD120EMFZ-11A6JA0 12TB performs inconsistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 120MB/s
Avg. Sequential Read Speed 167MB/s

Average Bench

(Based on 275 samples)
Min Avg Max
101 Read 167 204
100 Write 170 210
65.3 Mixed 120 147
89.5 SusWrite 167 204
115% 156 MB/s
Min Avg Max
1.89 4K Read 4.52 6.43
2.79 4K Write 5.25 7.7
0.5 4K Mixed 2.09 3.4
517% 3.95 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
1.5TB free
Firmware: 81.00A81
SusWrite @10s intervals: 122 117 118 115 119 122 MB/s
Read 116
Write 128
Mixed 96
SusWrite 119
85% 115 MB/s
4K Read 4.6
4K Write 5.7
4K Mixed 2.5
575% 4.27 MB/s
6TB free
Firmware: 7101
SusWrite @10s intervals: 21 21 21 21 21 21 MB/s
Read 35
Write 37.3
Mixed 38
SusWrite 21.4
25% 32.9 MB/s
4K Read 2.6
4K Write 3.7
4K Mixed 2.7
477% 3 MB/s
275 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 40,679,338 HDDs tested.

Typical WD120EMFZ-11A6JA0 12TB Builds (Compare 72,928 builds) See popular component choices, score breakdowns and rankings.
Gaming 104%
Desktop 94%
Nuclear submarine
Workstation 106%

Motherboard: Asus TUF GAMING X570-PLUS (WI-FI) - $169

EDIT WITH CUSTOM PC BUILDER Value: 71% - Very good Total price: $1,206

Popular WD120EMFZ-11A6JA0 12TB 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) September 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.


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 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
Seagate Barracuda 1TB (2016) $34Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $72G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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