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Seagate

ST9640320AS 640GB

▲ 500 ▼

Release date ≤ Q4 2013.

Average Bench: 35.4% (581st of 1015)

Based on 5,562 user benchmarks.  Models: ST9640320AS, ST964032 0AS, ST964032 ST9640320AS
Poor: 13%Average: 35.4% Great: 49%

Popular builds with this HDD

Poor average bench

The Seagate ST9640320AS 640GB averaged 64.5% 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 35.7%. 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 38MB/s
Avg. Sustained Write Speed 60.6MB/s
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Average Bench

(Based on 5,562 samples)
Rank 58135.4%
Min Avg Max
10.4 Read 62.9 85.7
18.7 Write 61.8 82.9
14.3 Mixed 38 47.5
22.1 SusWrite 60.6 86.1
41% 55.8 MB/s
Min Avg Max
0.1 4K Read 0.44 0.5
0.6 4K Write 0.85 1
0.26 4K Mixed 0.58 0.7
98.7% 0.62 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
315GB free
Firmware: 0001SDM1
SusWrite @10s intervals: 83 82 83 83 84 83 MB/s
44.1% Average
Read 70.8
Write 86.3
Mixed 44
SusWrite 82.9
52% 71 MB/s
4K Read 0.4
4K Write 0.8
4K Mixed 0.6
98% 0.6 MB/s
7GB free
Firmware: 0001HPM1
SusWrite @10s intervals: 77 77 75 69 66 66 MB/s
42% Average
Read 74.8
Write 74.9
Mixed 45.7
SusWrite 71.5
49% 66.7 MB/s
4K Read 0.5
4K Write 0.8
4K Mixed 0.7
113% 0.67 MB/s
262GB free
Firmware: 0001DEM1
SusWrite @10s intervals: 66 66 67 61 67 67 MB/s
40.5% Average
Read 75.2
Write 63.3
Mixed 44.3
SusWrite 65.8
46% 62.2 MB/s
4K Read 0.5
4K Write 0.9
4K Mixed 0.7
115% 0.7 MB/s
187GB free
Firmware: 0001DEM1
SusWrite @10s intervals: 65 71 71 71 71 72 MB/s
36.9% Below average
Read 58.5
Write 50.3
Mixed 37
SusWrite 70.1
40% 54 MB/s
4K Read 0.5
4K Write 0.9
4K Mixed 0.6
104% 0.67 MB/s
140GB free (System drive)
Firmware: 0002DEM1
SusWrite @10s intervals: 36 63 58 68 64 62 MB/s
34.8% Below average
Read 62.7
Write 62
Mixed 35.7
SusWrite 58.6
40% 54.8 MB/s
4K Read 0.5
4K Write 0.9
4K Mixed 0.6
104% 0.67 MB/s
91GB free
Firmware: 0002SDM1
SusWrite @10s intervals: 66 68 72 72 71 72 MB/s
34.6% Below average
Read 50.5
Write 46.9
Mixed 32.8
SusWrite 70
37% 50 MB/s
4K Read 0.6
4K Write 0.8
4K Mixed 0.6
106% 0.67 MB/s
4GB free
Firmware: 0002DEM1
SusWrite @10s intervals: 41 63 73 68 45 59 MB/s
28.5% Poor
Read 41.1
Write 41.8
Mixed 29.6
SusWrite 58.1
31% 42.6 MB/s
4K Read 0.7
4K Write 0.7
4K Mixed 0.6
109% 0.67 MB/s
302GB free
Firmware: 0001DEM1
SusWrite @10s intervals: 41 43 44 44 44 44 MB/s
26.9% Poor
Read 50.3
Write 45.2
Mixed 28.2
SusWrite 43.3
31% 41.8 MB/s
4K Read 0.5
4K Write 0.8
4K Mixed 0.6
102% 0.63 MB/s
5,562 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 53,309,187 HDDs tested

 Prices

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AmazonUS $27018 months
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Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Typical ST9640320AS 640GB Builds (Compare 1,952 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 2%
Tree trunk
Desktop
Desktop 51%
Yacht
Workstation
Workstation 2%
Tree trunk

System: Dell Inspiron N5110

CPU
Core i7-2670QMIntel  $200Bench 56%, 51,169 samples410x
Core i5-2450MIntel  $225Bench 49%, 51,836 samples332x
Core i5-2430MIntel  $53Bench 50%, 41,461 samples303x
GPU
HD 3000 (Mobile V1 1.1/1.2 GHz)IntelBench 2%, 209,058 samples1,261x
GeForce GT 525MNvidiaBench 2%, 9,032 samples378x
HD 3000 (Mobile V2 1.3 GHz)IntelBench 2%, 110,588 samples296x
SSD
A400 240GBKingston  $28Bench 66%, 424,288 samples62x
A400 120GBKingston  $32Bench 61%, 166,392 samples32x
BX500 240GBCrucial  $29Bench 56%, 142,801 samples28x
RAM
M471B5273DH0-CH9 1x4GBSamsungBench 25%, 18,713 samples88x
HMT351S6BFR8C-H9 1x4GBHynixBench 24%, 8,698 samples68x
M471B5273CH0-CH9 1x4GBSamsungBench 24%, 13,596 samples50x
EDIT WITH CUSTOM PC BUILDER Value: 57% - 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 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 value for money 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
  • - 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
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Hard Drive Rankings (Price vs Performance) April 2024 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.

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Speed Comparisons

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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

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
What is 4K random write speed?
What is 4K random read speed?
What is AS SSD real world copy speed?
How big is 16GB?
What does MBps mean?
Hard Drives
What is the Hard Drive value for money rating?
What is effective Hard Drive speed?
ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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