Average Bench: 35.2% (596th of 1015)

Based on 2,902 user benchmarks.  Models: ST9640320AS, ST964032 0AS, ST964032 ST9640320AS

Poor average bench

The Seagate ST9640320AS 640GB averaged 64.8% 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 0.58MB/s
Avg. 4K Random Read Speed 0.44MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Seagate ST9640320AS 640GB is 40%. This is a relatively wide range which indicates that the Seagate ST9640320AS 640GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 37MB/s
Avg. Sustained Write Speed 59.5MB/s
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Average Bench

(Based on 2,902 samples)
Min Avg Max
10.3 Read 63.1 87.2
15.9 Write 61.7 84.5
12.6 Mixed 37 47.5
16.3 SusWrite 59.5 85.4
40.6% 55.3 MB/s
Min Avg Max
0.1 4K Read 0.44 0.5
0.5 4K Write 0.83 1
0.2 4K Mixed 0.58 0.7
98.3% 0.62 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
538GB free (System drive)
Firmware: 0001DEM1
SusWrite @10s intervals: 76 76 67 77 81 83 MB/s
Read 85.2
Write 83
Mixed 46.2
SusWrite 76.6
53% 72.8 MB/s
4K Read 0.5
4K Write 1
4K Mixed 0.6
106% 0.7 MB/s
106GB free (System drive)
Firmware: 0002
SusWrite @10s intervals: 69 73 72 71 77 79 MB/s
Read 84.6
Write 82.6
Mixed 45.3
SusWrite 73.6
52% 71.5 MB/s
4K Read 0.5
4K Write 0.8
4K Mixed 0.7
113% 0.67 MB/s
525GB free (System drive)
Firmware: 0002
SusWrite @10s intervals: 45 42 72 57 77 72 MB/s
Read 57.1
Write 57.1
Mixed 27.6
SusWrite 61
37% 50.7 MB/s
4K Read 0.4
4K Write 1
4K Mixed 0.6
102% 0.67 MB/s
561GB free
Firmware: 0105
SusWrite @10s intervals: 63 58 51 68 62 52 MB/s
Read 57.5
Write 45.1
Mixed 34.5
SusWrite 59
36% 49 MB/s
4K Read 0.4
4K Write 1
4K Mixed 0.6
102% 0.67 MB/s
41GB free
Firmware: 0002SDM1
SusWrite @10s intervals: 50 49 50 51 50 48 MB/s
Read 66.5
Write 64
Mixed 39.5
SusWrite 49.7
40% 54.9 MB/s
4K Read 0.5
4K Write 0.8
4K Mixed 0.6
102% 0.63 MB/s
121GB free
Firmware: 0001SDM1
SusWrite @10s intervals: 52 52 53 54 53 53 MB/s
Read 60
Write 56.7
Mixed 39
SusWrite 53
38% 52.2 MB/s
4K Read 0.5
4K Write 0.8
4K Mixed 0.6
102% 0.63 MB/s
2,902 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,346,913 HDDs tested.

 Prices

AmazonUS $14922 days
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Typical ST9640320AS 640GB Builds (Compare 5,533 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 12%
Tree trunk
Desktop
Desktop 43%
Speed boat
Workstation
Workstation 18%
Surfboard

System: Dell Inspiron N5110

EDIT WITH CUSTOM PC BUILDER Value: 38% - Below average Total price: $276

Popular ST9640320AS 640GB systems:

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.

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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.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
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  • - Share your opinion by voting.
Hard Drive Rankings (Price vs Performance) November 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.

 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 i5-9400F $148Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $45
Intel Core i5-9600K $195AMD RX 590 $185Samsung 850 Evo 120GB $150
Intel Core i7-9700K $340Nvidia RTX 2060 $325Samsung 860 Evo 250GB $51
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3000 C15 2x8GB $71SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $42G.SKILL Trident Z DDR4 3200 C14 4x16GB $609SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85Corsair Vengeance LPX DDR4 3200 C16 2x8GB $68SanDisk Extreme 16GB $24
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