Average Bench: 87.4% (43rd of 995)

Based on 108 user benchmarks.  Models: WDC WD4001FFSX-68JNUN0, WDC WD4001FFSX-68JNU, WDC WD4001FFSX-6, WDC WD40 01FFSX-68JNUN0

The new 4TB WD Red Pro is an upgraded version of WD's popular Red NAS (Network Attached Storage). The Pro Reds have a rotation speed of 7200 RPM unlike their regular Red counterparts which are marketed as "IntelliPower" but actually spin at fixed speeds of 5400 or 5700 RPM depending on the exact model. Comparing the regular 3TB Red and the 4TB Pro shows that the pro version is significantly faster across the board. The biggest performance gains are seen in the small file 4K area and are a direct consequence of lower access times due to the higher rotation speed of the Pro Red. As well as offering better performance the Pro Reds have 5 year warranties vs 3 years on the regular Reds. Unfortunately it's not all good news as the Pro Red is priced around 50% higher than its regular Red sibling and thus currently represents average value for money at best. [Oct '14 HDrivePro]


Very good average bench

The WD Red Pro 4TB (2014) averaged just 12.5% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the WD Red Pro 4TB (2014) near the top of the comparison list.


Avg. 4K Random Write Speed 2.78MB/s
Avg. Sequential Read Speed 160MB/s

Average consistency

The range of scores (95th - 5th percentile) for the WD Red Pro 4TB (2014) is 41.9%. This is a relatively wide range which indicates that the WD Red Pro 4TB (2014) performs inconsistently under varying real world conditions.


Avg. 4K Random Mixed IO Speed 0.27MB/s
Avg. 4K Random Read Speed 0.78MB/s

Average Bench

(Based on 108 samples)
Min Avg Max
117 Read 160 211
102 Write 145 173
84.6 Mixed 135 166
110% 147 MB/s
Min Avg Max
0.5 4K Read 0.78 0.99
2.3 4K Write 2.78 3.29
0.2 4K Mixed 0.27 0.35
114% 1.28 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
3TB free
Firmware: 81.00A81 Max speed: SATA 3.0 600 MB/s
Read 160
Write 150
Mixed 145
114% 152 MB/s
4K Read 0.68
4K Write 2.7
4K Mixed 0.26
107% 1.21 MB/s
2.5TB free
Firmware: 81.00A81 Max speed: SATA 3.0 600 MB/s
Read 152
Write 148
Mixed 153
114% 151 MB/s
4K Read 0.81
4K Write 2.43
4K Mixed 0.34
117% 1.2 MB/s
940GB free
Firmware: 81.00A81 Max speed: SATA 3.0 600 MB/s
Read 138
Write 146
Mixed 104
96% 129 MB/s
4K Read 0.68
4K Write 2.71
4K Mixed 0.34
116% 1.24 MB/s
516GB free
Firmware: 81.0
Read 141
Write 107
Mixed 108
89% 118 MB/s
4K Read 0.64
4K Write 2.55
4K Mixed 0.22
99% 1.14 MB/s
108 MORE »

 Market Share (See Leaders)

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


Approx. $249 @ launch in Jul '14
BHPhotoUS $22919 months
AmazonUS $3502 months
NeweggUS $4267 months
Send price feedback
Typical Red Pro 4TB (2014) Builds (Compare 3,339 builds) See popular component choices, score breakdowns and rankings.
Gaming 60%
Desktop 69%
Battle cruiser
Workstation 46%

Motherboard: Asus P8Z77-V

EDIT WITH CUSTOM PC BUILDER Value: 68% - Good Total price: $1,070

Popular Red Pro 4TB (2014) 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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
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.


Storage for 8 to 16 bay NAS solutions...

Added 3 years ago.

Good (edit your comment) Add link

9 months ago.

In use for 7 months in my 4 bay NAS. Good performance. Excellent warranty.


3 years ago.

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

 Best User Rated

The Best.
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $85
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $150
AMD Ryzen 5 1600 $188AMD RX 480 $400Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $190SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $216SanDisk Extreme 16GB $18
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