Average Bench: 64.5% (731st of 1058)

Based on 1,611 user benchmarks.  Model: KingDian S400 120GB

Above average average bench

The Kingdian S400 120GB averaged 35.5% 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.


Avg. 4K Random Read Speed 27.8MB/s
Avg. 4K-64Thread Mixed IO Speed 85.8MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the Kingdian S400 120GB is 64.8%. This is a particularly wide range which indicates that the Kingdian S400 120GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 123MB/s
Avg. Sequential Mixed IO Speed 248MB/s

Average Bench

(Based on 1,611 samples)
Min Avg Max
311 Read 435 508
103 Write 324 413
21.7 Mixed 248 410
41.4 SusWrite 123 352
62.8% 282 MB/s
Min Avg Max
17.2 4K Read 27.8 38.5
10.1 4K Write 51.9 100
1 4K Mixed 24.9 47.2
102% 34.9 MB/s
Min Avg Max
32.9 DQ Read 206 355
16 DQ Write 202 333
1 DQ Mixed 85.8 240
97% 165 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
39GB free (System drive)
Firmware: Q0526A
SusWrite @10s intervals: 231 134 140 131 140 141 MB/s
Read 487
Write 415
Mixed 406
SusWrite 153
82% 365 MB/s
4K Read 27.2
4K Write 56.1
4K Mixed 36.4
118% 39.9 MB/s
DQ Read 32.7
DQ Write 99.5
DQ Mixed 46.1
41% 59.4 MB/s
1,611 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 49,337,376 SSDs tested.

Typical S400 120GB Builds (Compare 3,782 builds) See popular component choices, score breakdowns and rankings.
Gaming 7%
Tree trunk
Desktop 64%
Workstation 7%
Tree trunk

Motherboard: Intel B75

EDIT WITH CUSTOM PC BUILDER Value: 78% - Very good Total price: $200

Popular S400 120GB compatible motherboards:

How Fast Is Your SSD? (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.
  • - 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.
  • - Compare your in-game FPS to other users with your hardware.
Solid State Drive Rankings (Price vs Performance) November 2021 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. 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 SSDs. [SSDrivePro]


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.


1058 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs 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 i5-12600K $300Nvidia RTX 3070 $500Crucial MX500 250GB $45
Intel Core i5-11600K $220Nvidia RTX 3060-Ti $400Samsung 860 Evo 250GB $52
Intel Core i7-11700K $300Nvidia RTX 3080 $700Samsung 850 Evo 120GB $183
Seagate Barracuda 1TB (2016) $38Corsair Vengeance LPX DDR4 3200 C16 2x8GB $63SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $33Corsair Vengeance LPX DDR4 3000 C15 2x8GB $74SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $71G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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