Average Bench: 31.3% (702nd of 1015)

Based on 998 user benchmarks.  Model: SAMSUNG HD400LJ

Poor average bench

The Samsung HD400LJ 400GB averaged 68.6% 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 0.65MB/s
Avg. 4K Random Write Speed 1.22MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Samsung HD400LJ 400GB is 22.7%. This is a relatively narrow range which indicates that the Samsung HD400LJ 400GB performs reasonably consistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 40.7MB/s
Avg. Sustained Write Speed 49.4MB/s

Average Bench

(Based on 998 samples)
Min Avg Max
36 Read 58.5 74
28.2 Write 53.7 75
23.3 Mixed 40.7 59.7
23 SusWrite 49.4 72.2
37.3% 50.6 MB/s
Min Avg Max
0.3 4K Read 0.53 0.6
0.9 4K Write 1.22 1.8
0.28 4K Mixed 0.65 0.9
117% 0.8 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
367GB free
Firmware: ZZ100-15
SusWrite @10s intervals: 67 76 62 76 77 77 MB/s
Read 77.5
Write 69.8
Mixed 50.8
SusWrite 72.5
50% 67.7 MB/s
4K Read 0.6
4K Write 1.3
4K Mixed 0.8
138% 0.9 MB/s
231GB free
Firmware: 0-15
SusWrite @10s intervals: 51 50 50 51 50 50 MB/s
Read 75.2
Write 65.5
Mixed 44.2
SusWrite 50.4
43% 58.8 MB/s
4K Read 0.6
4K Write 1.2
4K Mixed 0.9
147% 0.9 MB/s
332GB free (System drive)
Firmware: ZZ100-15
SusWrite @10s intervals: 48 53 57 65 64 61 MB/s
Read 67.6
Write 64.1
Mixed 44.1
SusWrite 57.9
43% 58.4 MB/s
4K Read 0.4
4K Write 1.3
4K Mixed 0.7
118% 0.8 MB/s
369GB free
Firmware: ZZ100-15
SusWrite @10s intervals: 46 46 45 46 46 50 MB/s
Read 59.7
Write 47.5
Mixed 39.5
SusWrite 46.5
36% 48.3 MB/s
4K Read 0.5
4K Write 1.1
4K Mixed 0.6
108% 0.73 MB/s
998 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 22,990,303 HDDs tested.


AmazonUS $757 mins
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Typical HD400LJ 400GB Builds (Compare 2,369 builds) See popular component choices, score breakdowns and rankings.
Gaming 53%
Desktop 63%
Workstation 39%
Jet ski

Motherboard: Gigabyte GA-Z77P-D3

EDIT WITH CUSTOM PC BUILDER Value: 53% - Above average Total price: $535

Popular HD400LJ 400GB 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) January 2020 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.
  • 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.


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.
Intel Core i5-9600K $218Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $42
Intel Core i5-9400F $155Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $324Nvidia RTX 2060 $349Samsung 850 Pro 512GB $249
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $653SanDisk Ultra Fit 32GB $16
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