Real World Speed
Performance profile from 76,820 user samples
14,572 User Benchmarks
Best Bench: 95% 4.5TB free
Worst Bench: 55% 57GB free
Poor: 55% Great: 95%
SPEED RANK: 84th / 984
62,248 User Benchmarks
Best Bench: 108% 111GB free
Worst Bench: 62% 2.5TB free
Poor: 62% Great: 108%
SPEED RANK: 30th / 984
Effective Speed
Effective HDD Speed
77.4 % 88.9 % Slightly faster effective speed.
Avg. Sequential Read Speed
141 MB/s 161 MB/s Slightly faster read speed.
Avg. Sequential Write Speed
129 MB/s 149 MB/s Faster write speed.
4K Read
Avg. 4K Random Read Speed
0.58 MB/s 0.65 MB/s Slightly faster random read.
4K Write
Avg. 4K Random Write Speed
1.32 MB/s 1.5 MB/s Slightly faster random write.
Avg. Sequential Mixed IO Speed
120 MB/s 137 MB/s Slightly faster mixed IO speed.
4K Mixed
Avg. 4K Random Mixed IO Speed
0.18 MB/s 0.25 MB/s Much faster random mixed IO.
Peak Sequential Read Speed
178 MB/s 198 MB/s Slightly faster peak read speed.
Peak Sequential Write Speed
163 MB/s 186 MB/s Slightly faster peak write speed.
4K Read
Peak 4K Random Read Speed
0.75 MB/s 0.98 MB/s Much faster peak random read.
4K Write
Peak 4K Random Write Speed
1.91 MB/s Slightly faster peak random write.
1.8 MB/s
Peak Sequential Mixed IO Speed
152 MB/s 174 MB/s Slightly faster peak mixed IO speed.
4K Mixed
Peak 4K Random Mixed IO Speed
0.27 MB/s 0.39 MB/s Much faster peak random mixed IO.
Market Share
Based on 8,254,355 HDDs tested.
Market Share
Market Share (trailing 30 days)
0.2 % 0.81 % Hugely higher market share.
Value For Money
98.7 % +2% 96.9 %
User Rating
UBM User Rating
54 % 67 % More popular.
Price (score)
$90 $79 Slightly cheaper.
61 Months More recent.
78 Months

This is Seagate's most recent hard drive and their first 4TB consumer offering. With a rotational speed of just 5,900 RPM it's significantly slower than the 7,200 RPM Barracudas that it supersedes. The lower rotational speed results in approximately 10% slower sequential transfer speeds and longer access times which make this drive less suitable for use as a system drive. With peak 4k read/write speeds of 0.76/1.2 MB/s the 4TB HDD.15 lags the group leaders significantly. The HDD.15 is a far better candidate for use in a NAS (Network Attached Storage) where factors such as power consumption and cost per GB are more important than outright speeds. To conclude, the HDD.15 has a relatively disappointing small file 4K performance profile but it does offer a huge amount of storage at a very competitive price which makes it a good candidate for use in a NAS. [Aug '13 HDrivePro]


This drive can be used as a combined system and storage drive thanks to its fast 7200K rpm and enormous 3TB capacity. Recently prices for all large drives have been dropping and the 3TB Barracuda 7200.14 is currently a good choice in terms of both value for money and performance. Not only does the Barracuda have respectable sequential read/write speeds but it also goes head to head with the various green options, consuming a very reasonable 5.4W vs 5W (idle) on average for a "green" drive. That amounts to a tiny power consumption disadvantage and a lot more speed. Overall the Barracuda is priced aggressively and represents very good value for money. [Oct '12 HDrivePro]


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.
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
  • - 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.

 Frequently Asked Questions

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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 $148
Intel Core i5-8600K $235AMD RX 480 $400Samsung 850 Pro 256GB $160
Seagate Barracuda 1TB (2016) $42Corsair Vengeance LPX DDR4 3000 C15 2x8GB $170SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $51Corsair Vengeance LPX DDR4 3200 C16 2x8GB $205SanDisk Extreme 16GB $18
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