TEST
YOUR SSD
ADD TO PC
BUILD

Kingston SKC400S37/128G

SSDNow KC400 128GB

▲ 512 ▼

Release date ≈ Q1 2016.

VS

Average Bench: 74.9% (503rd of 1011)

Based on 414 user benchmarks.  Models: KINGSTON SKC400S37128G, KINGSTON KINGSTON SKC400S, KINGSTON SKC400S3712, KINGSTON SKC400S, KINGSTON SKC400S37128G
Poor: 51%Average: 74.9% Great: 102%

Popular builds with this SSD

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
ADVERTISEMENT

Average Bench

(Based on 414 samples)
Rank 50374.9%
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
102% Outstanding
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
86.2% Excellent
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
84.7% Excellent
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
81.2% Excellent
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
66% Good
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
Send price feedback
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money.

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
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

CPU
Core i7-2600KIntel  $450Bench 60%, 75,154 samples20x
Core i7-3770Intel  $266Bench 61%, 123,629 samples8x
Core i5-3470Intel  $136Bench 54%, 84,269 samples7x
GPU
GTX 1050-TiNvidia  $150Bench 31%, 399,276 samples11x
HD 5870AMDBench 18%, 6,700 samples7x
GTX 660Nvidia  $170Bench 22%, 70,646 samples4x
SSD
SSDNow KC400 128GBKingston  $100Bench 75%, 414 samples15x
RAM
HyperX DDR3 2400 C11 2x4GBKingstonBench 57%, 5,772 samples16x
HyperX DDR3 2400 C11 1x4GBKingstonBench 30%, 136 samples4x
RipjawsX DDR3 1600 C10 1x8GBG.SKILLBench 28%, 2,756 samples3x
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

Gaming Desktop Workstation

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]

ADVERTISEMENT

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

Added n/a ago.
Your
opinion?
▲Like ▼Dislike
Ready to retire
Age: 3 years

Speed Comparisons

vs Samsung 850 Evo 250GB
vs Samsung 850 Evo 500GB
vs Samsung 850 Pro 256GB
vs Crucial MX500 250GB
vs Samsung 850 Evo 120GB
vs Samsung 850 Pro 512GB
vs Samsung 860 Evo 250GB
vs Samsung 850 Evo 1TB
vs HyperX Savage 240GB

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

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
What is the effective SSD speed index?
How is the AS SSD write score calculated?
How is the AS SSD read score calculated?
How is the AS SSD total score calculated?
ALL FAQs »

 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
Today's hottest
Amazon Ebay
deals
CPU GPU SSD HDD USB RAM MBD
Test your PC Build a PC
Can You Run It?
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer Feedback