Average Bench: 34.7% (603rd of 1015)

Based on 3,242 user benchmarks.  Models: ST9640320AS, ST964032 0AS, ST964032 ST9640320AS

Poor average bench

The Seagate ST9640320AS 640GB averaged 65.3% 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

Above average consistency

The range of scores (95th - 5th percentile) for the Seagate ST9640320AS 640GB is 38.7%. 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 36.8MB/s
Avg. Sustained Write Speed 58.7MB/s
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Average Bench

(Based on 3,242 samples)
Min Avg Max
7.66 Read 62.1 85.9
16.4 Write 62.5 84.2
10.5 Mixed 36.8 46.7
19.9 SusWrite 58.7 85
40.4% 55 MB/s
Min Avg Max
0.2 4K Read 0.44 0.5
0.6 4K Write 0.85 1
0.2 4K Mixed 0.58 0.7
99% 0.63 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
555GB free
Firmware: 0002SDM1
SusWrite @10s intervals: 85 84 85 86 86 85 MB/s
Read 87.2
Write 84.5
Mixed 44.7
SusWrite 85.2
55% 75.4 MB/s
4K Read 0.5
4K Write 0.9
4K Mixed 0.7
115% 0.7 MB/s
475GB free
Firmware: 0002HPM1
SusWrite @10s intervals: 85 83 85 86 84 85 MB/s
Read 86.8
Write 87.1
Mixed 46
SusWrite 84.7
56% 76.1 MB/s
4K Read 0.5
4K Write 1
4K Mixed 0.7
117% 0.73 MB/s
504GB free
Firmware: 0002SDM1
SusWrite @10s intervals: 85 84 86 86 86 85 MB/s
Read 84.6
Write 80.4
Mixed 45.7
SusWrite 85.4
54% 74 MB/s
4K Read 0.5
4K Write 0.8
4K Mixed 0.6
102% 0.63 MB/s
588GB free
Firmware: 0001DEM1
SusWrite @10s intervals: 85 85 84 85 85 86 MB/s
Read 82.6
Write 79.2
Mixed 47.3
SusWrite 85.1
54% 73.5 MB/s
4K Read 0.5
4K Write 0.9
4K Mixed 0.7
115% 0.7 MB/s
562GB free (System drive)
Firmware: 0002HPM1
SusWrite @10s intervals: 61 67 59 71 73 75 MB/s
Read 83.3
Write 61.9
Mixed 43.2
SusWrite 67.6
47% 64 MB/s
4K Read 0.5
4K Write 0.9
4K Mixed 0.7
115% 0.7 MB/s
423GB free (System drive)
Firmware: 0002
SusWrite @10s intervals: 53 71 63 74 79 79 MB/s
Read 74.8
Write 78.5
Mixed 39.5
SusWrite 69.7
48% 65.6 MB/s
4K Read 0.5
4K Write 1
4K Mixed 0.6
106% 0.7 MB/s
278GB free
Firmware: 0002SDM1
SusWrite @10s intervals: 69 70 71 71 71 71 MB/s
Read 64.1
Write 68.3
Mixed 40.2
SusWrite 70.4
45% 60.8 MB/s
4K Read 0.5
4K Write 0.9
4K Mixed 0.6
104% 0.67 MB/s
3,242 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 31,865,895 HDDs tested.

 Prices

AmazonUS $532 months
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Typical ST9640320AS 640GB Builds (Compare 2,104 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 2%
Tree trunk
Desktop
Desktop 53%
Yacht
Workstation
Workstation 2%
Tree trunk

System: Dell Inspiron N5110

EDIT WITH CUSTOM PC BUILDER Value: 59% - Above average Total price: $228

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.
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  • - Share your opinion by voting.
Hard Drive Rankings (Price vs Performance) October 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]

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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 i5-9600K $199Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $45
Intel Core i5-9400F $143Nvidia RTX 3080 $700Samsung 850 Evo 120GB $78
Intel Core i5-10600K $260Nvidia RTX 2070S (Super) $510Samsung 860 Evo 250GB $50
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $63SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $69SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $548SanDisk Extreme 16GB $28
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