WDWD4004FZWX
WDWD6001FZWX
Real World Speed
Performance profile from 8,309 user samples
5,438 User Benchmarks
Best Bench: 113% 3.5TB free
Worst Bench: 69% 3TB free
Poor: 69% Great: 113%
SPEED RANK: 13th / 1015
2,871 User Benchmarks
Best Bench: 122% 5.5TB free
Worst Bench: 71% 4.5TB free
Poor: 71% Great: 122%
SPEED RANK: 8th / 1015
Effective Speed
Effective HDD Speed
93.7 % 97.4 % +4%
Read
Avg. Sequential Read Speed
162 MB/s 168 MB/s +4%
Write
Avg. Sequential Write Speed
167 MB/s 202 MB/s Faster write speed.
+21%
4K Read
Avg. 4K Random Read Speed
0.98 MB/s 4.66 MB/s Hugely faster random read.
+376%
4K Write
Avg. 4K Random Write Speed
4.97 MB/s Much faster random write.
+57%
3.16 MB/s
Mixed
Avg. Sequential Mixed IO Speed
73.3 MB/s 103 MB/s Much faster mixed IO speed.
+41%
4K Mixed
Avg. 4K Random Mixed IO Speed
0.67 MB/s 1.03 MB/s Much faster random mixed IO.
+54%
SusWrite
Avg. Sustained Write Speed
163 MB/s 169 MB/s +4%
Read
Peak Sequential Read Speed
200 MB/s 214 MB/s Slightly faster peak read speed.
+7%
Write
Peak Sequential Write Speed
206 MB/s 246 MB/s Faster peak write speed.
+19%
4K Read
Peak 4K Random Read Speed
1.1 MB/s 7 MB/s Hugely faster peak random read.
+536%
4K Write
Peak 4K Random Write Speed
6.2 MB/s Much faster peak random write.
+77%
3.5 MB/s
Mixed
Peak Sequential Mixed IO Speed
83.6 MB/s 126 MB/s Much faster peak mixed IO speed.
+51%
4K Mixed
Peak 4K Random Mixed IO Speed
0.9 MB/s 1.1 MB/s Faster peak random mixed IO.
+22%
SusWrite
Peak Sequential Sustained Write 60s Average
198 MB/s 217 MB/s Slightly faster peak sustained write speed.
+10%
Market Share
Based on 19,159,675 HDDs tested.
Market Share
Market Share (trailing 30 days)
0.08 % Hugely higher market share.
+300%
0.02 %
Value
Value For Money
43.1 % +3% 41.7 %
User Rating
UBM User Rating
60 % 68 % Slightly more popular.
+13%
Price
Price (score)
$174 Much cheaper.
+38%
$280
Age
Newest
38 Months More recent.
+24%
50 Months
Capacity
Capacity
4TB 6TB
Hard Drive Rankings (Price vs Performance) August 2019 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]

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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.
  • - 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.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-9400F $143AMD RX 580 $172Samsung 850 Evo 250GB $86
AMD Ryzen 5 3600 $198Nvidia GTX 1660 $220Samsung 850 Evo 500GB $103
Intel Core i5-9600K $230AMD RX 5700 XT $400Samsung 850 Pro 256GB $195
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 64GB $128
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $695SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $80Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 16GB $24
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