Average Bench: 72.9% (115th of 1015)

more Based on 12,694 user benchmarks.  Models: WDC WD20PURZ-85GU6Y0, WDC WD20PURZ-85A, WDC WD20PURZ-74AKKY0, WDC WD20PURZ-64N96Y0, WDC WD20PURZ-85GU6Y0, WDC WD20PURZ-85G, WDC WD20PURZ-85T0FY0, WDC WD20PURZ-85GU690, WD20PURZ-85GU6Y0, WDC WD20PURZ-85U8XY0, WD WD20PURZ-85GU6Y0, WDC WD20PURZ-85AKKY0, WDC WD20 PURZ-85GU6Y0, WDC WD20 PURZ-85AKKY0

Good average bench

The WD Purple Surveillance 2TB (2017) averaged 27.0% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Mixed IO Speed 0.89MB/s
Avg. 4K Random Write Speed 2.43MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the WD Purple Surveillance 2TB (2017) is 64%. This is a particularly wide range which indicates that the WD Purple Surveillance 2TB (2017) performs inconsistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 65.7MB/s
Avg. Sequential Write Speed 125MB/s

Average Bench

(Based on 12,694 samples)
Min Avg Max
71.8 Read 128 188
75.4 Write 125 176
38 Mixed 65.7 88.3
67.8 SusWrite 126 185
81.2% 111 MB/s
Min Avg Max
0.5 4K Read 0.91 2.1
1.1 4K Write 2.43 3.8
0.5 4K Mixed 0.89 1
182% 1.41 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
1.5TB free
Firmware: 80.00A80
SusWrite @10s intervals: 170 171 171 171 173 173 MB/s
Read 168
Write 164
Mixed 85.4
SusWrite 171
108% 147 MB/s
4K Read 0.9
4K Write 2.2
4K Mixed 0.8
167% 1.3 MB/s
984GB free
Firmware: 80.00A80
SusWrite @10s intervals: 122 126 126 127 126 126 MB/s
Read 120
Write 119
Mixed 71.5
SusWrite 126
80% 109 MB/s
4K Read 0.6
4K Write 2.3
4K Mixed 0.8
156% 1.23 MB/s
139GB free
Firmware: 80.00A80
SusWrite @10s intervals: 98 100 101 102 101 101 MB/s
Read 97
Write 100
Mixed 63.5
SusWrite 101
66% 90.4 MB/s
4K Read 0.7
4K Write 2.5
4K Mixed 1
187% 1.4 MB/s
1.5TB free (System drive)
Firmware: 80.00A80
SusWrite @10s intervals: 34 27 19 27 26 40 MB/s
Read 97.6
Write 120
Mixed 43
SusWrite 29
53% 72.4 MB/s
4K Read 0.6
4K Write 2
4K Mixed 0.7
140% 1.1 MB/s
12,694 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 44,760,614 HDDs tested.


EbayUS $558 days
AmazonUS $6519 mins
BHPhotoUS $703 years
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Typical Purple Surveillance 2TB (2017) Builds (Compare 113,668 builds) See popular component choices, score breakdowns and rankings.
Gaming 99%
Nuclear submarine
Desktop 86%
Aircraft carrier
Workstation 95%
Nuclear submarine

Motherboard: Asus ROG STRIX B450-F GAMING - $135

EDIT WITH CUSTOM PC BUILDER Value: 63% - Good Total price: $975

Popular Purple Surveillance 2TB (2017) 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.

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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) May 2022 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.


20 months ago.

2 hdd with problem in less than 3 years

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 i5-12600K $278Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-12400F $160Nvidia RTX 3070 $500Samsung 850 Evo 120GB $200
Intel Core i7-12700K $334Nvidia RTX 3050 $250Samsung 860 Evo 250GB $52
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3200 C16 2x8GB $68SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $72SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $470SanDisk Ultra Fit 32GB $16
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