Average Bench: 19.8% (956th of 984)

Based on 821 user benchmarks.  Models: ST9160821AS, ST916082 1AS, ST916082 ST9160821AS

Terrible average bench

The Seagate ST9160821AS 160GB averaged 80.1% 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 0.22MB/s
Avg. 4K Random Read Speed 0.36MB/s

Very good consistency

The range of scores (95th - 5th percentile) for the Seagate ST9160821AS 160GB is just 10.5%. This is a relatively narrow range which indicates that the Seagate ST9160821AS 160GB performs reasonably consistently under varying real world conditions.


Avg. Sequential Write Speed 34.3MB/s
Avg. Sequential Mixed IO Speed 29.5MB/s

Average Bench

(Based on 821 samples)
Min Avg Max
24.2 Read 34.7 43
23.5 Write 34.3 42.8
15.2 Mixed 29.5 41.2
24.6% 32.8 MB/s
Min Avg Max
0.08 4K Read 0.36 0.5
0.16 4K Write 0.59 0.78
0.08 4K Mixed 0.22 0.29
50.5% 0.39 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
127GB free
Firmware: 3.BHE Max speed: SATA 1.0 150 MB/s
Read 42.1
Write 42.6
Mixed 40.2
31% 41.6 MB/s
4K Read 0.44
4K Write 0.73
4K Mixed 0.29
64% 0.49 MB/s
149GB free
Firmware: 3.BHE Max speed: SATA 1.0 150 MB/s
Read 41.8
Write 42.3
Mixed 40.9
31% 41.7 MB/s
4K Read 0.44
4K Write 0.76
4K Mixed 0.26
61% 0.49 MB/s
113GB free
Firmware: 3.CDD Max speed: SATA 1.0 150 MB/s
Read 41.9
Write 39.2
Mixed 39.4
30% 40.2 MB/s
4K Read 0.38
4K Write 0.75
4K Mixed 0.23
55% 0.45 MB/s
46GB free
Firmware: 3.BHE Max speed: SATA 1.0 150 MB/s
Read 36.3
Write 33.9
Mixed 36.4
27% 35.5 MB/s
4K Read 0.35
4K Write 0.81
4K Mixed 0.25
58% 0.47 MB/s
112GB free
Firmware: 3.ALE Max speed: SATA 1.0 150 MB/s
Read 33.5
Write 34.2
Mixed 32.5
25% 33.4 MB/s
4K Read 0.25
4K Write 0.56
4K Mixed 0.24
48% 0.35 MB/s
31GB free
Firmware: 3.BHD Max speed: SATA 1.0 150 MB/s
Read 26.1
Write 27
Mixed 26.9
20% 26.6 MB/s
4K Read 0.09
4K Write 0.27
4K Mixed 0.07
17% 0.14 MB/s
1GB free
Firmware: 3.ALD Max speed: SATA 1.0 150 MB/s
Read 22
Write 22.2
Mixed 21.6
16% 21.9 MB/s
4K Read 0.46
4K Write 0.61
4K Mixed 0.25
58% 0.44 MB/s
821 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 7,222,173 HDDs tested.


AmazonUS $2524 mins
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Typical ST9160821AS 160GB Builds (Compare 79 builds) See popular component choices, score breakdowns and rankings.
Gaming 11%
Tree trunk
Desktop 21%
Workstation 13%
Tree trunk

System: Dell Inspiron 1720

EDIT WITH CUSTOM PC BUILDER Value: 36% - Below average Total price: $118

Popular ST9160821AS 160GB systems:

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Hard Drive Rankings (Price vs Performance) January 2018 HDD Rankings.

Welcome to our consumer Hard Drive comparison. We calculate effective speed which measures performance for typical consumers. Effective speed is adjusted by cost per GB to yield value for money. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top HDDs. Share your opinion by voting. [HDrivePro]


984 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

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The Best.
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AMD Ryzen 7 1700 $290Nvidia GTX 1060-6GB $275Samsung 850 Evo 500GB $140
Intel Core i5-7600K $210AMD RX 480 $400Samsung 850 Pro 256GB $110
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $205SanDisk Extreme 64GB $65
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $51Corsair Vengeance LPX DDR4 3200 C16 2x8GB $220SanDisk Ultra Fit 32GB $12
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