Average Bench: 47.8% (347th of 1015)

Based on 4,495 user benchmarks.  Models: ST31000340AS, ST310003 40AS, ST310003 ST31000340AS

Below average average bench

The Seagate ST31000340AS 1TB averaged 52.2% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Mixed IO Speed 0.74MB/s
Avg. 4K Random Read Speed 0.72MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Seagate ST31000340AS 1TB is 31.1%. This is a relatively narrow range which indicates that the Seagate ST31000340AS 1TB performs reasonably consistently under varying real world conditions.


Avg. Sequential Write Speed 47.8MB/s
Avg. Sequential Mixed IO Speed 42.9MB/s

Average Bench

(Based on 4,495 samples)
Min Avg Max
49.2 Read 84.9 106
7.5 Write 47.8 101
18.5 Mixed 42.9 55.3
41.5 SusWrite 81.4 106
47.1% 64.3 MB/s
Min Avg Max
0.37 4K Read 0.72 0.8
0.9 4K Write 1.5 1.9
0.5 4K Mixed 0.74 1
140% 0.99 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
931GB free
Firmware: SD81
SusWrite @10s intervals: 107 107 109 108 109 109 MB/s
Read 103
Write 13.4
Mixed 49
SusWrite 108
50% 68.4 MB/s
4K Read 0.8
4K Write 1.6
4K Mixed 0.8
152% 1.07 MB/s
931GB free
Firmware: LC11
SusWrite @10s intervals: 97 100 100 98 99 100 MB/s
Read 97.6
Write 36.9
Mixed 36.7
SusWrite 98.9
49% 67.5 MB/s
4K Read 0.7
4K Write 1.2
4K Mixed 0.5
107% 0.8 MB/s
723GB free
Firmware: SD1A
SusWrite @10s intervals: 51 52 50 52 52 52 MB/s
Read 41.9
Write 13.2
Mixed 33.3
SusWrite 51.5
26% 35 MB/s
4K Read 0.8
4K Write 1.8
4K Mixed 0.9
167% 1.17 MB/s
4,495 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 29,522,807 HDDs tested.


AmazonUS $707 mins
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Typical ST31000340AS 1TB Builds (Compare 5,863 builds) See popular component choices, score breakdowns and rankings.
Gaming 94%
Nuclear submarine
Desktop 93%
Nuclear submarine
Workstation 89%
Aircraft carrier

Motherboard: MSI B450M MORTAR MAX (MS-7B89)

EDIT WITH CUSTOM PC BUILDER Value: 79% - Very good Total price: $690

Popular ST31000340AS 1TB compatible motherboards:

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.
Hard Drive Rankings (Price vs Performance) August 2020 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.
  • 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.


1015 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different HDDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i5-9600K $195Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $46
Intel Core i5-9400F $156Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $335Nvidia RTX 2070S (Super) $510Samsung 860 Evo 250GB $50
Seagate Barracuda 1TB (2016) $42Corsair Vengeance LPX DDR4 3200 C16 2x8GB $60SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $69SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Extreme 16GB $24
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