Average Bench: 64.8% (161st of 995)

more Based on 2,794 user benchmarks.  Models: WDC WD20PURX-64P6ZY0, WDC WD20PURX-64GVNYO, WDC WD20PURX-64GVNY0, WDC WD20PURX-89P6ZY0, WD20PURX-68P8ZY0, WDC WD20PURX-64P6ZYO, WDC WD20PURX-64P, WDC WD20PURX-78P6ZY0, WDC WD20PURX-64PFUY0, WDC WD20PURX-64E5EY0, WDC WD20 PURX-64P6ZY0, WD20PURX-64GVNY0, WDC WD20PURX-64D85Y0

The WD Purple is a surveillance drive with low power consumption and a design that's optimized for 24x7 operation. There is actually little beyond marketing that separates the Purple from the Red and Green drives. They all share almost identical hardware. The thing that does differentiate the Purple drives is their firmware which supports AllFrame, a surveillance specific feature. Allframe handles the cache in a way that is optimized for video streams. The AllFrame technology however is only enabled when used in conjunction with a supported host controller, most of which are only found in dedicated NVR (Network Video Recording) devices. As a result there is no benefit in using this drive in a HTPC to record video streams, because the surveillance specific functions won't be enabled. In terms of effective speed the Purple lags the new Red and Green drives by around 26%. [Oct '14 HDrivePro]


Above average average bench

The WD Purple 2TB (2014) averaged 35.1% 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 Write Speed 1.9MB/s
Avg. Sequential Mixed IO Speed 105MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the WD Purple 2TB (2014) is 38.2%. This is a relatively wide range which indicates that the WD Purple 2TB (2014) performs inconsistently under varying real world conditions.


Avg. 4K Random Read Speed 0.52MB/s
Avg. 4K Random Mixed IO Speed 0.21MB/s

Average Bench

(Based on 2,794 samples)
Min Avg Max
73 Read 111 142
76.4 Write 115 146
64.5 Mixed 105 134
83% 110 MB/s
Min Avg Max
0.27 4K Read 0.52 0.78
0.49 4K Write 1.9 2.47
0.14 4K Mixed 0.21 0.27
80.4% 0.88 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
363GB free
Firmware: 80.00A80 Max speed: SATA 3.0 600 MB/s
Read 102
Write 107
Mixed 91.7
75% 100 MB/s
4K Read 0.46
4K Write 2.11
4K Mixed 0.25
86% 0.94 MB/s
253GB free
Firmware: 80.00A80 Max speed: SATA 3.0 600 MB/s
Read 94.9
Write 95.9
Mixed 92.1
71% 94.3 MB/s
4K Read 0.59
4K Write 1.5
4K Mixed 0.22
77% 0.77 MB/s
1TB free
Firmware: 80.00A80 Max speed: SATA 3.0 600 MB/s
Read 88.1
Write 101
Mixed 49.7
59% 79.7 MB/s
4K Read 0.64
4K Write 0.39
4K Mixed 0.18
54% 0.4 MB/s
2,794 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 8,300,895 HDDs tested.


Approx. $93 @ launch in Jul '14
EbayUS $6018 mins
AmazonUS $759 mins
BHPhotoUS $8014 months
NeweggUS $857 months
Send price feedback
Typical Purple 2TB (2014) Builds (Compare 19,178 builds) See popular component choices, score breakdowns and rankings.
Gaming 12%
Tree trunk
Desktop 57%
Workstation 23%

Disqualified System: bin bin

EDIT WITH CUSTOM PC BUILDER Value: 70% - Good Total price: $410

Popular Purple 2TB (2014) systems:

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Hard Drive Rankings (Price vs Performance) March 2018 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.
  • Fastest effective speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.


995 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

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