Average Bench: 48.1% (341st of 1015)

Based on 6,558 user benchmarks.  Model: SAMSUNG HD642JJ

Below average average bench

The Samsung HD642JJ 640GB averaged 51.9% 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 0.95MB/s
Avg. 4K Random Write Speed 2.25MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung HD642JJ 640GB is 35%. This is a relatively wide range which indicates that the Samsung HD642JJ 640GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 53.5MB/s
Avg. Sequential Write Speed 71.6MB/s
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Average Bench

(Based on 6,558 samples)
Min Avg Max
44.9 Read 85.5 114
29.9 Write 71.6 112
35.4 Mixed 53.5 62.7
42.6 SusWrite 81.7 113
53.8% 73.1 MB/s
Min Avg Max
0.4 4K Read 0.67 0.8
1.28 4K Write 2.25 2.9
0.58 4K Mixed 0.95 1.2
175% 1.29 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
596GB free
Firmware: 1AA01117
SusWrite @10s intervals: 113 113 114 114 114 113 MB/s
Read 112
Write 111
Mixed 62.2
SusWrite 114
73% 99.7 MB/s
4K Read 0.7
4K Write 2.9
4K Mixed 0.9
183% 1.5 MB/s
522GB free
Firmware: 1AA01113
SusWrite @10s intervals: 103 104 113 112 111 109 MB/s
Read 103
Write 105
Mixed 64.2
SusWrite 109
70% 95.3 MB/s
4K Read 0.7
4K Write 2.5
4K Mixed 1
187% 1.4 MB/s
457GB free
Firmware: 1AA01114
SusWrite @10s intervals: 100 98 98 98 97 98 MB/s
Read 106
Write 66.5
Mixed 59.6
SusWrite 98.2
61% 82.5 MB/s
4K Read 0.7
4K Write 2.9
4K Mixed 1.1
205% 1.57 MB/s
59GB free
Firmware: 1AA01117
SusWrite @10s intervals: 85 84 85 81 81 85 MB/s
Read 93
Write 60.5
Mixed 60.5
SusWrite 83.4
55% 74.3 MB/s
4K Read 0.7
4K Write 2.1
4K Mixed 1.1
190% 1.3 MB/s
529GB free (System drive)
Firmware: 1AA0
SusWrite @10s intervals: 56 62 96 86 92 99 MB/s
Read 91.5
Write 53.5
Mixed 29.6
SusWrite 82
47% 64.2 MB/s
4K Read 0.4
4K Write 1.1
4K Mixed 0.3
70% 0.6 MB/s
228GB free
Firmware: 1AA01117
SusWrite @10s intervals: 84 83 83 83 83 84 MB/s
Read 87.2
Write 93.5
Mixed 57.7
SusWrite 83.2
59% 80.4 MB/s
4K Read 0.7
4K Write 2.5
4K Mixed 1.1
198% 1.43 MB/s
232GB free
Firmware: 1AA01113
SusWrite @10s intervals: 79 85 84 84 86 84 MB/s
Read 83
Write 84.8
Mixed 52.3
SusWrite 83.6
56% 75.9 MB/s
4K Read 0.6
4K Write 2.1
4K Mixed 0.9
164% 1.2 MB/s
60GB free
Firmware: 1AA01113
SusWrite @10s intervals: 62 62 67 67 68 68 MB/s
Read 93
Write 93.5
Mixed 51.8
SusWrite 65.7
56% 76 MB/s
4K Read 0.7
4K Write 2
4K Mixed 0.9
166% 1.2 MB/s
521GB free (System drive)
Firmware: 1AA0
SusWrite @10s intervals: 43 46 54 65 58 68 MB/s
Read 41.7
Write 47.2
Mixed 34.2
SusWrite 55.7
33% 44.7 MB/s
4K Read 0.1
4K Write 0.7
4K Mixed 0.4
62% 0.4 MB/s
6,558 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 20,477,955 HDDs tested.

 Prices

AmazonUS $3815 mins
Send price feedback
Typical HD642JJ 640GB Builds (Compare 1,165 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 21%
Surfboard
Desktop
Desktop 46%
Yacht
Workstation
Workstation 31%
Sail boat

System: DELL Studio XPS 435T/9000

EDIT WITH CUSTOM PC BUILDER Value: 38% - Below average Total price: $314

Popular HD642JJ 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.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.
Hard Drive Rankings (Price vs Performance) October 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 $140Nvidia GTX 1660 $210Samsung 850 Evo 250GB $55
Intel Core i5-9600K $238Nvidia GTX 1660-Ti $270Samsung 850 Evo 500GB $107
Intel Core i7-9700K $288Nvidia RTX 2060S (Super) $430Samsung 850 Pro 256GB $200
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 64GB $88
Seagate Barracuda 3TB (2016) $83G.SKILL Trident Z DDR4 3200 C14 4x16GB $603SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $70SanDisk Ultra Fit 32GB $14
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