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WDWD2000F9YZ
WDWD4001FAEX
▲ 500 ▼

Release date ≈ Q2 2014.

VS
Effective Speed 
+1%
Real World Speed
Performance profile from 6,290 user samples
Benchmark your HDD here
2,177 User Benchmarks
Best Bench: 93% 1TB free
Worst Bench: 50% 258GB free (System drive)
Poor: 50% Great: 93%
SPEED RANK: 110th / 1015
4,113 User Benchmarks
Best Bench: 93% 3TB free
Worst Bench: 49% 3.5TB free
Poor: 49% Great: 93%
SPEED RANK: 113th / 1015
Effective Speed
Effective HDD Speed 		74.8 % +1% 74.1 %
Average Score 
+0%
Read
Avg. Sequential Read Speed 		135 MB/s +2% 132 MB/s
Write
Avg. Sequential Write Speed 		127 MB/s +2% 124 MB/s
4K Read
Avg. 4K Random Read Speed 		0.85 MB/s Slightly faster random read.
+9% 		0.78 MB/s
4K Write
Avg. 4K Random Write Speed 		2.88 MB/s 3.16 MB/s Slightly faster random write.
+10%
Mixed
Avg. Sequential Mixed IO Speed 		83.4 MB/s 86.1 MB/s +3%
4K Mixed
Avg. 4K Random Mixed IO Speed 		0.96 MB/s 0.96 MB/s
SusWrite
Avg. Sustained Write Speed 		126 MB/s +1% 125 MB/s
Peak Score 
+2%
Read
Peak Sequential Read Speed 		170 MB/s +1% 169 MB/s
Write
Peak Sequential Write Speed 		154 MB/s 155 MB/s +1%
4K Read
Peak 4K Random Read Speed 		1.1 MB/s Faster peak random read.
+10% 		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 		109 MB/s +1% 108 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		1.2 MB/s Slightly faster peak random mixed IO.
+9% 		1.1 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		158 MB/s 159 MB/s +1%
Value & Sentiment 
+∞%
Market Share
Based on 53,308,972 HDDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.04 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		76.8 % Hugely better value.
+319% 		18.3 %
User Rating
UBM User Rating 		50 % 52 % +4%
Price
Price (score) 		$39 Hugely cheaper.
+88% 		$323
Nice To Haves 
+14%
Age
Newest 		118+ Months More recent.
+14% 		137 Months
Specifications 
Capacity
Capacity 		2TB 4TB
Conclusion 
Average Bench 74.8%
Average Bench 74.1%
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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]

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Hard Drive Rankings (Price vs Performance) April 2024 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 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 value for money upgrades.

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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

Storage Devices FAQ
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What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
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What is incompressible data?
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What is 4K random write speed?
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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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