WDWD6001FZWX
WDWD4001FAEX
Real World Speed
Performance profile from 4,836 user samples
2,838 User Benchmarks
Best Bench: 122% 5.5TB free
Worst Bench: 71% 4.5TB free
Poor: 71% Great: 122%
SPEED RANK: 7th / 1015
1,998 User Benchmarks
Best Bench: 90% 3.5TB free
Worst Bench: 48% 3TB free
Poor: 48% Great: 90%
SPEED RANK: 120th / 1015
Effective Speed
Effective HDD Speed
97.3 % Much faster effective speed.
+33%
73.4 %
Read
Avg. Sequential Read Speed
169 MB/s Faster read speed.
+28%
132 MB/s
Write
Avg. Sequential Write Speed
202 MB/s Much faster write speed.
+62%
125 MB/s
4K Read
Avg. 4K Random Read Speed
4.66 MB/s Hugely faster random read.
+490%
0.79 MB/s
4K Write
Avg. 4K Random Write Speed
3.17 MB/s 3.18 MB/s +0%
Mixed
Avg. Sequential Mixed IO Speed
103 MB/s Faster mixed IO speed.
+21%
85 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
1.03 MB/s +4% 0.99 MB/s
SusWrite
Avg. Sustained Write Speed
169 MB/s Much faster sustained write speed.
+36%
124 MB/s
Read
Peak Sequential Read Speed
214 MB/s Much faster peak read speed.
+30%
164 MB/s
Write
Peak Sequential Write Speed
247 MB/s Much faster peak write speed.
+61%
153 MB/s
4K Read
Peak 4K Random Read Speed
7 MB/s Hugely faster peak random read.
+600%
1 MB/s
4K Write
Peak 4K Random Write Speed
3.5 MB/s 3.7 MB/s Slightly faster peak random write.
+6%
Mixed
Peak Sequential Mixed IO Speed
126 MB/s Faster peak mixed IO speed.
+19%
106 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
1.1 MB/s 1.2 MB/s Slightly faster peak random mixed IO.
+9%
SusWrite
Peak Sequential Sustained Write 60s Average
216 MB/s Much faster peak sustained write speed.
+38%
156 MB/s
Market Share
Based on 19,213,464 HDDs tested.
Market Share
Market Share (trailing 30 days)
0.02 % 0.02 %
Value
Value For Money
46.3 % Hugely better value.
+83%
25.3 %
User Rating
UBM User Rating
68 % More popular.
+21%
56 %
Price
Price (score)
$252 $232 Slightly cheaper.
+8%
Age
Newest
50 Months Much more recent.
+38%
81 Months
Capacity
Capacity
6TB 4TB
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I don't understand the pricing on this drive, on the face of it, it looks seriously overpriced. Although the Black has a marginal speed advantage compared to a 3TB Barracuda, one 4TB Caviar Black costs more than two 3TB Barracudas! I have only seen benchmarks from 3 user samples for the 4TB 2012 Black so I will re-visit this recap over the coming months by which time I should have a better sample size. Additional samples may indicate far better performance than I have seen so far. [Aug '13 HDrivePro]

MORE DETAILS

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 $140AMD RX 580 $169Samsung 850 Evo 250GB $86
AMD Ryzen 5 3600 $198AMD RX 5700 XT $400Samsung 850 Evo 500GB $102
Intel Core i5-9600K $219Nvidia GTX 1660 $220Samsung 850 Pro 256GB $97
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $42G.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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