Average Bench: 38.7% (557th of 1002)

more Based on 2,735 user benchmarks.  Models: ST320LT020-9YG142, ST320LT020-9YG1, ST320LT0 ST320LT020-9YG14, ST320LT020-9YG14, ST320LT0 20-9YG142, ST320LT0 ST320LT020-9YG1

Poor average bench

The Seagate Momentus Thin 5400 2.5" 320GB averaged 61.3% 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 0.19MB/s
Avg. Sequential Read Speed 68.2MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Seagate Momentus Thin 5400 2.5" 320GB is 20.1%. This is a relatively narrow range which indicates that the Seagate Momentus Thin 5400 2.5" 320GB performs reasonably consistently under varying real world conditions.


Avg. 4K Random Write Speed 0.69MB/s
Avg. 4K Random Read Speed 0.32MB/s

Average Bench

(Based on 2,735 samples)
Min Avg Max
50.3 Read 68.2 84.1
40.8 Write 66.6 84.6
10.7 Mixed 56.2 79.6
47.7% 63.7 MB/s
Min Avg Max
0.07 4K Read 0.32 0.49
0.3 4K Write 0.69 1.04
0.06 4K Mixed 0.19 0.44
47.8% 0.4 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
255GB free
Firmware: 0010SDM1 Max speed: SATA 2.0 300 MB/s
Read 90.6
Write 84.3
Mixed 79.2
64% 84.7 MB/s
4K Read 0.26
4K Write 0.66
4K Mixed 0.24
50% 0.39 MB/s
248GB free
Firmware: 0003DEM1 Max speed: SATA 2.0 300 MB/s
Read 79
Write 80.2
Mixed 78.5
60% 79.2 MB/s
4K Read 0.43
4K Write 1.07
4K Mixed 0.42
84% 0.64 MB/s
135GB free
Firmware: 0001SDM1 Max speed: SATA 2.0 300 MB/s
Read 75.6
Write 74.9
Mixed 69.6
55% 73.3 MB/s
4K Read 0.48
4K Write 0.66
4K Mixed 0.31
67% 0.48 MB/s
253GB free
Firmware: 0010SDM1 Max speed: SATA 2.0 300 MB/s
Read 71.5
Write 75.3
Mixed 70
54% 72.3 MB/s
4K Read 0.25
4K Write 0.65
4K Mixed 0.19
44% 0.36 MB/s
48GB free
Firmware: 0001 Max speed: SATA 2.0 300 MB/s
Read 41.3
Write 45.8
Mixed 41.8
32% 43 MB/s
4K Read 0.29
4K Write 0.85
4K Mixed 0.16
45% 0.43 MB/s
2,735 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 9,647,199 HDDs tested.


AmazonUS $352 years
Send price feedback
Typical Momentus Thin 5400 2.5" 320GB Builds (Compare 6,763 builds) See popular component choices, score breakdowns and rankings.
Gaming 13%
Tree trunk
Desktop 43%
Speed boat
Workstation 17%

System: HP Pavilion g6 Notebook PC

EDIT WITH CUSTOM PC BUILDER Value: 65% - Good Total price: $259

Popular Momentus Thin 5400 2.5" 320GB 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.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Hard Drive Rankings (Price vs Performance) June 2018 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]


Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Fastest effective speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.


1002 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.
AMD Ryzen 5 1600 $175Nvidia GTX 1070 $447Samsung 850 Evo 250GB $104
Intel Core i7-8700K $320Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $123
Intel Core i5-8600K $239AMD RX 480 $280Samsung 850 Pro 256GB $116
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback