Average Bench: 74.9% (503rd of 1011)

Based on 414 user benchmarks.  Models: KINGSTON SKC400S37128G, KINGSTON KINGSTON SKC400S, KINGSTON SKC400S3712, KINGSTON SKC400S, KINGSTON SKC400S37128G

Good average bench

The Kingston SSDNow KC400 128GB averaged 25.0% 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 Read Speed 24.7MB/s
Avg. 4K Random Write Speed 67.5MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Kingston SSDNow KC400 128GB is 51.5%. This is a relatively wide range which indicates that the Kingston SSDNow KC400 128GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K-64Thread Mixed IO Speed 30.3MB/s
Avg. Sustained Write Speed 268MB/s
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Average Bench

(Based on 414 samples)
Min Avg Max
241 Read 469 524
127 Write 317 416
176 Mixed 314 382
123 SusWrite 268 402
76.5% 342 MB/s
Min Avg Max
15.7 4K Read 24.7 31.8
29.2 4K Write 67.5 111
8.08 4K Mixed 18.8 40.5
97.3% 37 MB/s
Min Avg Max
20.9 DQ Read 222 357
46.9 DQ Write 209 353
8.11 DQ Mixed 30.3 66.8
73.5% 154 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
33GB free
Firmware: SAFM001A
SusWrite @10s intervals: 331 366 371 382 386 212 MB/s
Read 475
Write 408
Mixed 296
SusWrite 341
85% 380 MB/s
4K Read 29.9
4K Write 110
4K Mixed 38.2
152% 59.2 MB/s
DQ Read 364
DQ Write 353
DQ Mixed 66.7
130% 261 MB/s
45GB free (System drive)
Firmware: 00.Y
SusWrite @10s intervals: 242 308 296 259 211 192 MB/s
Read 361
Write 369
Mixed 295
SusWrite 251
72% 319 MB/s
4K Read 26.7
4K Write 91.2
4K Mixed 35.7
134% 51.2 MB/s
DQ Read 344
DQ Write 336
DQ Mixed 65.9
125% 249 MB/s
55GB free (System drive)
Firmware: SAFM001B
SusWrite @10s intervals: 197 225 254 244 262 249 MB/s
Read 487
Write 417
Mixed 302
SusWrite 238
81% 361 MB/s
4K Read 26.7
4K Write 48
4K Mixed 35.7
112% 36.8 MB/s
DQ Read 361
DQ Write 342
DQ Mixed 66.4
128% 256 MB/s
84GB free (System drive)
Firmware: SAFM00.W
SusWrite @10s intervals: 378 387 123 290 193 130 MB/s
Read 483
Write 413
Mixed 297
SusWrite 250
81% 361 MB/s
4K Read 23.5
4K Write 51.3
4K Mixed 29.2
100% 34.7 MB/s
DQ Read 355
DQ Write 345
DQ Mixed 66.5
128% 256 MB/s
55GB free (System drive)
Firmware: SAFM00.Y
SusWrite @10s intervals: 375 280 362 362 265 336 MB/s
Read 276
Write 10.7
Mixed 258
SusWrite 330
49% 219 MB/s
4K Read 25
4K Write 51.7
4K Mixed 29.1
102% 35.3 MB/s
DQ Read 29.7
DQ Write 106
DQ Mixed 38.5
38% 57.9 MB/s
414 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 16,894,872 SSDs tested.

 Prices

AmazonUS $10012 mins
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Typical SSDNow KC400 128GB Builds (Compare 60 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 33%
Sail boat
Desktop
Desktop 57%
Gunboat
Workstation
Workstation 36%
Jet ski

Motherboard: ECS Z77H2-A2X Deluxe

EDIT WITH CUSTOM PC BUILDER Value: 45% - Average Total price: $700

Popular SSDNow KC400 128GB 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.
  • - 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.
Solid State Drive Rankings (Price vs Performance) August 2019 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]

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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

1011 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.
CPUGPUSSD
Intel Core i5-9400F $143Nvidia GTX 1660 $220Samsung 850 Evo 250GB $86
Intel Core i5-9600K $219Nvidia GTX 1660-Ti $270Samsung 850 Evo 500GB $102
AMD Ryzen 5 3600 $198AMD RX 580 $173Samsung 850 Pro 256GB $97
HDDRAMUSB
Seagate Barracuda 1TB (2016) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $42G.SKILL Trident Z DDR4 3200 C14 4x16GB $695SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $75Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 16GB $24
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