Average Bench: 38.9% (525th of 984)

Based on 1,093 user benchmarks.  Models: ST9640320AS, ST964032 0AS, ST964032 ST9640320AS

Poor average bench

The Seagate ST9640320AS 640GB averaged 61.1% 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.

Strengths

Avg. 4K Random Mixed IO Speed 0.31MB/s
Avg. Sequential Read Speed 69.2MB/s

Very good consistency

The range of scores (95th - 5th percentile) for the Seagate ST9640320AS 640GB is just 18.3%. This is a relatively narrow range which indicates that the Seagate ST9640320AS 640GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.36MB/s
Avg. 4K Random Write Speed 0.84MB/s
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Average Bench

(Based on 1,093 samples)
Min Avg Max
47.6 Read 69.2 83.6
46.4 Write 66.3 80.5
18.4 Mixed 57.7 77.7
48.3% 64.4 MB/s
Min Avg Max
0.11 4K Read 0.36 0.51
0.59 4K Write 0.84 1
0.14 4K Mixed 0.31 0.42
64.9% 0.5 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
666GB free
Firmware: 0002HPM1 Max speed: SATA 2.0 300 MB/s
NCQ 5799 RPM !4KALIGNED S.M.A.R.T
Read 195
Write 165
Mixed 126
121% 162 MB/s
4K Read 0.52
4K Write 3.43
4K Mixed 0.77
171% 1.57 MB/s
275GB free
Firmware: 0003SDM1 Max speed: SATA 2.0 300 MB/s
SYSTEM NCQ 5400 RPM 4KALIGNED S.M.A.R.T
Read 78.3
Write 79.4
Mixed 69.8
57% 75.8 MB/s
4K Read 0.47
4K Write 0.96
4K Mixed 0.3
70% 0.57 MB/s
516GB free
Firmware: 0001HPM1 Max speed: SATA 2.0 300 MB/s
SYSTEM NCQ 5799 RPM 4KALIGNED S.M.A.R.T
Read 78.6
Write 75.3
Mixed 69.8
56% 74.6 MB/s
4K Read 0.5
4K Write 0.88
4K Mixed 0.44
86% 0.61 MB/s
543GB free
Firmware: 0002HPM1 Max speed: SATA 2.0 300 MB/s
SYSTEM NCQ 5799 RPM 4KALIGNED S.M.A.R.T
Read 78.2
Write 72.8
Mixed 69.5
55% 73.5 MB/s
4K Read 0.38
4K Write 0.93
4K Mixed 0.4
78% 0.57 MB/s
502GB free
Firmware: 0002 Max speed: SATA 2.0 300 MB/s
SYSTEM NCQ 5799 RPM 4KALIGNED S.M.A.R.T
Read 81.1
Write 64.1
Mixed 19.7
40% 55 MB/s
4K Read 0.31
4K Write 0.95
4K Mixed 0.25
58% 0.5 MB/s
25GB free
Firmware: 0002DEM1 Max speed: SATA 2.0 300 MB/s
SYSTEM NCQ 5799 RPM 4KALIGNED S.M.A.R.T
Read 75.8
Write 68.7
Mixed 36.3
44% 60.3 MB/s
4K Read 0.24
4K Write 0.71
4K Mixed 0.25
51% 0.4 MB/s
365GB free
Firmware: 0002SDM1 Max speed: SATA 2.0 300 MB/s
SYSTEM NCQ 5799 RPM 4KALIGNED S.M.A.R.T
Read 70.5
Write 64.1
Mixed 63.8
50% 66.2 MB/s
4K Read 0.39
4K Write 0.95
4K Mixed 0.35
73% 0.56 MB/s
339GB free
Firmware: 0001HPM1 Max speed: SATA 2.0 300 MB/s
SYSTEM NCQ 5799 RPM 4KALIGNED S.M.A.R.T
Read 62.7
Write 56.5
Mixed 71.1
48% 63.4 MB/s
4K Read 0.13
4K Write 0.54
4K Mixed 0.03
18% 0.23 MB/s
1,093 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,183,636 HDDs tested.

 Prices

AmazonUS $149.953 mins ago.
Send price feedback
Typical ST9640320AS 640GB Builds (Compare 1,800 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 12%
Tree trunk
Desktop
Desktop 44%
Speed boat
Workstation
Workstation 19%
Surfboard

System: Dell Inspiron N5110

EDIT WITH CUSTOM PC BUILDER Value: 66% - Good Total price: $290

Popular ST9640320AS 640GB systems:

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Hard Drive Rankings (Price vs Performance) November 2017 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]

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 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-7700K $288Nvidia GTX 1070 $410Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $270AMD RX 480 $240Samsung 850 Pro 256GB $110
Intel Core i5-7600K $200Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $150
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $189SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $1,050SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $55Corsair Vengeance LPX DDR4 3200 C16 2x8GB $195SanDisk Ultra Fit 32GB $12
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