Average Bench: 77.1% (474th of 1012)

Based on 430 user benchmarks.  Models: KINGSTON SKC400S37128G, KINGSTON KINGSTON SKC400S, KINGSTON SKC400S3712, KINGSTON SKC400S, KINGSTON SKC400S37128G

Good average bench

The Kingston SSDNow KC400 128GB averaged 22.9% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Kingston SSDNow KC400 128GB near the top of the comparison list.

Strengths

Avg. 4K Random Read Speed 25.1MB/s
Avg. 4K Random Write Speed 70.2MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Kingston SSDNow KC400 128GB is 51.4%. 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 38.2MB/s
Avg. Sustained Write Speed 268MB/s
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Average Bench

(Based on 430 samples)
Min Avg Max
232 Read 461 523
105 Write 321 417
162 Mixed 303 381
117 SusWrite 268 402
75.6% 338 MB/s
Min Avg Max
16 4K Read 25.1 31.9
28.8 4K Write 70.2 114
8.42 4K Mixed 22.5 41.2
104% 39.2 MB/s
Min Avg Max
22 DQ Read 238 358
54 DQ Write 218 356
8.36 DQ Mixed 38.2 66.9
80.7% 165 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
40GB free (System drive)
Firmware: SAFM001A
SusWrite @10s intervals: 154 257 247 218 204 211 MB/s
Read 500
Write 418
Mixed 301
SusWrite 215
80% 358 MB/s
4K Read 30.4
4K Write 92.9
4K Mixed 38.8
145% 54 MB/s
DQ Read 359
DQ Write 350
DQ Mixed 66.3
129% 258 MB/s
91GB free (System drive)
Firmware: SAFM00.W
SusWrite @10s intervals: 369 388 354 402 405 367 MB/s
Read 496
Write 407
Mixed 304
SusWrite 381
89% 397 MB/s
4K Read 27.3
4K Write 69.5
4K Mixed 33.7
121% 43.5 MB/s
DQ Read 281
DQ Write 246
DQ Mixed 65.7
103% 197 MB/s
65GB free (System drive)
Firmware: SAFM00.Y
SusWrite @10s intervals: 344 167 169 288 290 260 MB/s
Read 453
Write 392
Mixed 293
SusWrite 253
78% 348 MB/s
4K Read 25
4K Write 86.8
4K Mixed 27.5
119% 46.4 MB/s
DQ Read 234
DQ Write 347
DQ Mixed 65.7
113% 216 MB/s
26GB free (System drive)
Firmware: SAFM001B
SusWrite @10s intervals: 287 176 164 197 184 185 MB/s
Read 419
Write 328
Mixed 212
SusWrite 199
64% 290 MB/s
4K Read 24.3
4K Write 71
4K Mixed 37.5
122% 44.3 MB/s
DQ Read 17.6
DQ Write 91.3
DQ Mixed 37.8
34% 48.9 MB/s
31GB free (System drive)
Firmware: SAFM
SusWrite @10s intervals: 217 178 163 188 176 200 MB/s
Read 346
Write 343
Mixed 176
SusWrite 187
59% 263 MB/s
4K Read 20.6
4K Write 61.8
4K Mixed 29.1
101% 37.2 MB/s
DQ Read 226
DQ Write 214
DQ Mixed 65.2
91% 168 MB/s
42GB free (System drive)
Firmware: SAFM00.Y
SusWrite @10s intervals: 297 189 239 202 239 214 MB/s
Read 205
Write 341
Mixed 232
SusWrite 230
57% 252 MB/s
4K Read 26.1
4K Write 52.4
4K Mixed 29.8
106% 36.1 MB/s
DQ Read 30
DQ Write 17.2
DQ Mixed 39.1
25% 28.8 MB/s
430 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 20,095,342 SSDs tested.

 Prices

AmazonUS $9818 mins
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Typical SSDNow KC400 128GB Builds (Compare 65 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 34%
Sail boat
Desktop
Desktop 57%
Gunboat
Workstation
Workstation 35%
Jet ski

Motherboard: ECS Z77H2-A2X Deluxe

EDIT WITH CUSTOM PC BUILDER Value: 48% - Average Total price: $398

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) December 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

1012 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
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Intel Core i5-9600K $200AMD RX 590 $180Samsung 850 Evo 120GB $58
Intel Core i7-9700K $369Nvidia GTX 1650S (Super) $160Samsung 850 Pro 512GB $230
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $65SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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