WDWD4001FFSX
WDWD1003FZEX
Real World Speed
Performance profile from 210,377 user samples
529 User Benchmarks
Best Bench: 102% 3.5TB free
Worst Bench: 57% 3.5TB free
Poor: 57% Great: 102%
SPEED RANK: 55th / 1015
209,848 User Benchmarks
Best Bench: 109% 931GB free
Worst Bench: 55% 104GB free
Poor: 55% Great: 109%
SPEED RANK: 54th / 1015
Effective Speed
Effective HDD Speed
84.2 % 84.3 % +0%
Read
Avg. Sequential Read Speed
152 MB/s 155 MB/s +2%
Write
Avg. Sequential Write Speed
140 MB/s +1% 138 MB/s
4K Read
Avg. 4K Random Read Speed
0.88 MB/s 1.23 MB/s Much faster random read.
+40%
4K Write
Avg. 4K Random Write Speed
3.05 MB/s Faster random write.
+23%
2.47 MB/s
Mixed
Avg. Sequential Mixed IO Speed
93.1 MB/s +5% 88.9 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
1.02 MB/s 1.09 MB/s Slightly faster random mixed IO.
+7%
SusWrite
Avg. Sustained Write Speed
142 MB/s +2% 139 MB/s
Read
Peak Sequential Read Speed
184 MB/s 205 MB/s Faster peak read speed.
+11%
Write
Peak Sequential Write Speed
167 MB/s 179 MB/s Slightly faster peak write speed.
+7%
4K Read
Peak 4K Random Read Speed
1.1 MB/s 1.5 MB/s Much faster peak random read.
+36%
4K Write
Peak 4K Random Write Speed
3.6 MB/s Faster peak random write.
+20%
3 MB/s
Mixed
Peak Sequential Mixed IO Speed
113 MB/s 114 MB/s +1%
4K Mixed
Peak 4K Random Mixed IO Speed
1.2 MB/s 1.2 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
171 MB/s 182 MB/s Slightly faster peak sustained write speed.
+6%
Market Share
Based on 39,697,643 HDDs tested.
Market Share
Market Share (trailing 30 days)
0 % 0.73 % Insanely higher market share.
+∞%
Value
Value For Money
29.4 % Better value.
+27%
23.1 %
User Rating
UBM User Rating
53 % 58 % Slightly more popular.
+9%
Price
Price (score)
$229 $73 Much cheaper.
+68%
Age
Newest
84 Months Slightly more recent.
+10%
93 Months
Capacity
Capacity
4TB 1TB
ADVERTISEMENT

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]

MORE DETAILS

This is the most recent version (2013 FZEX) of Western Digital's best performing consumer storage drive, its predecessor was the WD1002FAEX which is now four years old. With average sequential read/write speeds of 150 MB/s this version outperforms its predecessor by a whopping 50%. Small file random 4K speeds have remained broadly unchanged with average read/write rates of 0.9/2.19 MB/s. Overall the 2013 WD Black has a very good performance profile and it also represents reasonable value for money, at least in the 1TB category. There are some good alternatives to the 2013 Black including the 2012 Blue. Looking at the 2013 Black vs 2012 Blue shows that both drives have similar performance. Power consumption (6.8/6.1 Watts active/idle) and noise levels (29.5 dBA) are also identical making it a tough call between the two. There is however, as always, better value amongst the larger capacities. [Feb '14 HDrivePro]

MORE DETAILS

Hard Drive Rankings (Price vs Performance) July 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]

ADVERTISEMENT

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.
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.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-11400F $260Nvidia RTX 3070 $500Crucial MX500 250GB $45
Intel Core i5-11600K $270Nvidia RTX 3060-Ti $400Samsung 860 Evo 250GB $52
Intel Core i7-10700K $320Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $177
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $80SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback