Average Bench: 56.5% (767th of 1011)

Based on 382 user benchmarks.  Models: KINGSTON SKC300S37A480G, KINGSTON KINGSTON SKC300S, KINGSTON SKC300S

Average average bench

The Kingston SSDNow KC300 480GB averaged 43.4% 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 23.7MB/s
Avg. 4K-64Thread Mixed IO Speed 70.7MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Kingston SSDNow KC300 480GB is 23.6%. This is a relatively narrow range which indicates that the Kingston SSDNow KC300 480GB performs reasonably consistently under varying real world conditions.


Avg. 4K Random Write Speed 19.1MB/s
Avg. 4K-64Thread Write Speed 81.3MB/s

Average Bench

(Based on 382 samples)
Min Avg Max
315 Read 432 513
163 Write 230 290
190 Mixed 272 340
121 SusWrite 198 256
63% 283 MB/s
Min Avg Max
12.3 4K Read 23.7 32.4
11.2 4K Write 19.1 24.6
9.54 4K Mixed 18 27.4
69.2% 20.3 MB/s
Min Avg Max
22.3 DQ Read 165 232
18.1 DQ Write 81.3 111
9.63 DQ Mixed 70.7 138
66.5% 106 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
375GB free (System drive)
Firmware: 507KC4
SusWrite @10s intervals: 262 243 269 264 244 220 MB/s
Read 412
Write 244
Mixed 308
SusWrite 250
68% 303 MB/s
4K Read 19.6
4K Write 18.5
4K Mixed 20.1
65% 19.4 MB/s
DQ Read 226
DQ Write 95
DQ Mixed 112
96% 144 MB/s
51GB free (System drive)
Firmware: 507KC4
SusWrite @10s intervals: 196 168 140 156 170 124 MB/s
Read 343
Write 253
Mixed 258
SusWrite 159
57% 253 MB/s
4K Read 29.8
4K Write 22.7
4K Mixed 25.8
90% 26.1 MB/s
DQ Read 193
DQ Write 75
DQ Mixed 103
84% 124 MB/s
273GB free (System drive)
Firmware: 507KC4
SusWrite @10s intervals: 211 247 250 256 247 252 MB/s
Read 392
Write 235
Mixed 295
SusWrite 244
65% 291 MB/s
4K Read 17.8
4K Write 17.9
4K Mixed 19.5
61% 18.4 MB/s
DQ Read 226
DQ Write 97.6
DQ Mixed 109
95% 144 MB/s
382 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 19,849,350 SSDs tested.


AmazonUS $8521 months
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Typical SSDNow KC300 480GB Builds (Compare 7,125 builds) See popular component choices, score breakdowns and rankings.
Gaming 15%
Tree trunk
Desktop 40%
Speed boat
Workstation 28%

System: HP Z400 Workstation

EDIT WITH CUSTOM PC BUILDER Value: 33% - Below average Total price: $124

Popular SSDNow KC300 480GB systems:

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]


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.


Controller: SandForce SF2281. Flash Memory: Toshiba 19nm Toggle Mode

Added n/a ago.
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.
Intel Core i5-9400F $145Nvidia GTX 1660S (Super) $244Crucial MX500 250GB $39
Intel Core i5-9600K $200Nvidia RTX 2060 $324Samsung 850 Evo 120GB $150
Intel Core i7-9700K $360AMD RX 590 $180Samsung 860 Evo 250GB $54
Seagate Barracuda 1TB (2016) $32Corsair Vengeance LPX DDR4 3200 C16 2x8GB $76SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $58SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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