Average Bench: 63.9% (176th of 1015)

Based on 13 user benchmarks.  Model: SEAGATE ST9900805SS

Above average average bench

The Seagate ST9900805SS 900GB averaged 36.1% 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 0.83MB/s
Avg. 4K Random Read Speed 1.17MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Seagate ST9900805SS 900GB is 34.4%. This is a relatively narrow range which indicates that the Seagate ST9900805SS 900GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 63.5MB/s
Avg. Sequential Write Speed 91.2MB/s
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Average Bench

(Based on 13 samples)
Min Avg Max
84.4 Read 132 163
45.8 Write 91.2 146
53.2 Mixed 89.6 144
43.7 SusWrite 63.5 141
69.8% 94 MB/s
Min Avg Max
0.43 4K Read 1.17 1.35
0.19 4K Write 1.19 3.2
0.41 4K Mixed 0.83 1.5
163% 1.06 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
672GB free
Firmware: CS08
SusWrite @10s intervals: 139 140 141 142 141 142 MB/s
Read 146
Write 141
Mixed 77
SusWrite 141
92% 126 MB/s
4K Read 1.2
4K Write 3.2
4K Mixed 1.5
276% 1.97 MB/s
838GB free
Firmware: CS05
SusWrite @10s intervals: 55 55 55 54 55 55 MB/s
Read 163
Write 55.1
Mixed 64.5
SusWrite 54.8
62% 84.4 MB/s
4K Read 1.3
4K Write 0.9
4K Mixed 1
182% 1.07 MB/s
742GB free
Firmware: CS05
SusWrite @10s intervals: 47 50 49 47 46 47 MB/s
Read 148
Write 52.2
Mixed 63.4
SusWrite 47.7
58% 77.9 MB/s
4K Read 1.3
4K Write 0.9
4K Mixed 1
182% 1.07 MB/s
471GB free
Firmware: CS05
SusWrite @10s intervals: 51 52 52 53 53 53 MB/s
Read 139
Write 51.8
Mixed 61
SusWrite 52.3
56% 76 MB/s
4K Read 1.2
4K Write 0.9
4K Mixed 1
178% 1.03 MB/s
471GB free
Firmware: CS05
SusWrite @10s intervals: 52 53 52 53 53 53 MB/s
Read 135
Write 52
Mixed 61.8
SusWrite 52.5
56% 75.4 MB/s
4K Read 1.2
4K Write 0.9
4K Mixed 1
178% 1.03 MB/s
471GB free
Firmware: CS05
SusWrite @10s intervals: 52 52 52 53 52 53 MB/s
Read 134
Write 51
Mixed 61.5
SusWrite 52.4
55% 74.8 MB/s
4K Read 1.3
4K Write 0.9
4K Mixed 1
182% 1.07 MB/s
141GB free
Firmware: CS05
SusWrite @10s intervals: 43 43 44 44 44 44 MB/s
Read 97.3
Write 45.8
Mixed 53.2
SusWrite 43.7
44% 60 MB/s
4K Read 1.2
4K Write 0.9
4K Mixed 1
178% 1.03 MB/s
13 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,764,346 HDDs tested.

Typical ST9900805SS 900GB Builds (Compare 4,264 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 16%
Surfboard
Desktop
Desktop 60%
Gunboat
Workstation
Workstation 39%
Jet ski

Motherboard: Dell Precision T3600

EDIT WITH CUSTOM PC BUILDER Value: 52% - Above average Total price: $400

Popular ST9900805SS 900GB compatible motherboards:

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.

UserBenchmark of the month

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) December 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 $145Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $44
Intel Core i5-9600K $200Nvidia RTX 2060 $324Samsung 850 Evo 120GB $150
Intel Core i7-9700K $360AMD RX 590 $180Samsung 850 Pro 512GB $230
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $58SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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