Average Bench: 25.2% (861st of 1015)

Based on 437 user benchmarks.  Models: ST3120811AS, ST312081 ST3120811AS, ST312081 1AS

Very poor average bench

The Seagate ST3120811AS 120GB averaged 74.8% 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.

Strengths

Avg. 4K Random Mixed IO Speed 0.55MB/s
Avg. 4K Random Read Speed 0.52MB/s

Very good consistency

The range of scores (95th - 5th percentile) for the Seagate ST3120811AS 120GB is just 19.8%. This is a relatively narrow range which indicates that the Seagate ST3120811AS 120GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sequential Write Speed 35.9MB/s
Avg. Sequential Mixed IO Speed 31.7MB/s
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Average Bench

(Based on 437 samples)
Min Avg Max
19.7 Read 45.2 57.7
13.2 Write 35.9 55.3
15.3 Mixed 31.7 50.5
15.9 SusWrite 40.6 57.6
28.4% 38.4 MB/s
Min Avg Max
0.1 4K Read 0.52 0.7
0.39 4K Write 1.06 1.3
0.13 4K Mixed 0.55 0.9
103% 0.71 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
20GB free
Firmware: 3.AAE
SusWrite @10s intervals: 56 57 57 57 57 57 MB/s
Read 56.3
Write 26.5
Mixed 35.7
SusWrite 56.7
32% 43.8 MB/s
4K Read 0.6
4K Write 1.2
4K Mixed 0.7
125% 0.83 MB/s
106GB free
Firmware: 3.AAE
SusWrite @10s intervals: 55 56 55 56 56 56 MB/s
Read 55.2
Write 24.4
Mixed 38.3
SusWrite 55.8
32% 43.4 MB/s
4K Read 0.7
4K Write 1.3
4K Mixed 0.8
142% 0.93 MB/s
112GB free
Firmware: 3.AA
SusWrite @10s intervals: 54 56 56 56 56 56 MB/s
Read 54.6
Write 53.3
Mixed 36.9
SusWrite 55.5
37% 50.1 MB/s
4K Read 0.7
4K Write 1.2
4K Mixed 0.9
151% 0.93 MB/s
106GB free
Firmware: 3.AAE
SusWrite @10s intervals: 55 56 56 MB/s
Read 54.9
Write 24.2
Mixed 37.4
SusWrite 54.6
32% 42.8 MB/s
4K Read 0.6
4K Write 1.3
4K Mixed 0.8
138% 0.9 MB/s
83GB free
Firmware: 3.AAE
SusWrite @10s intervals: 52 53 52 52 54 53 MB/s
Read 54
Write 23.6
Mixed 37
SusWrite 52.8
31% 41.8 MB/s
4K Read 0.6
4K Write 1.2
4K Mixed 0.7
125% 0.83 MB/s
44GB free
Firmware: 3.AAE
SusWrite @10s intervals: 42 45 46 46 44 46 MB/s
Read 29.3
Write 12
Mixed 19.9
SusWrite 44.7
20% 26.5 MB/s
4K Read 0.6
4K Write 1.2
4K Mixed 0.8
136% 0.87 MB/s
31GB free
Firmware: 3.AAE
SusWrite @10s intervals: 29 30 29 24 24 24 MB/s
Read 40.7
Write 13.7
Mixed 20.7
SusWrite 26.8
19% 25.5 MB/s
4K Read 0.6
4K Write 0.7
4K Mixed 0.6
105% 0.63 MB/s
437 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 40,749,352 HDDs tested.

 Prices

AmazonUS $1794 years
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Typical ST3120811AS 120GB Builds (Compare 2,029 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 2%
Tree trunk
Desktop
Desktop 41%
Speed boat
Workstation
Workstation 2%
Tree trunk

Motherboard: Gigabyte GA-G41M-Combo

EDIT WITH CUSTOM PC BUILDER Value: 45% - Average Total price: $220

Popular ST3120811AS 120GB 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.
  • - 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.
Hard Drive Rankings (Price vs Performance) September 2021 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.

 Comments

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.
CPUGPUSSD
Intel Core i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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