Average Bench: 56.5% (769th of 1011)

Based on 364 user benchmarks.  Models: KINGSTON SKC300S37A480G, KINGSTON KINGSTON SKC300S, KINGSTON SKC300S

Average average bench

The Kingston SSDNow KC300 480GB averaged 43.5% 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 23.7MB/s
Avg. 4K-64Thread Mixed IO Speed 68.6MB/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 80.4MB/s

Average Bench

(Based on 364 samples)
Min Avg Max
315 Read 435 514
163 Write 229 289
190 Mixed 271 339
122 SusWrite 196 256
62.9% 283 MB/s
Min Avg Max
12.3 4K Read 23.7 32.3
11.2 4K Write 19.1 24.5
9.46 4K Mixed 17.9 27.4
68.9% 20.2 MB/s
Min Avg Max
22.1 DQ Read 163 231
18 DQ Write 80.4 110
9.53 DQ Mixed 68.6 138
65.1% 104 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
206GB free (System drive)
Firmware: 507KC4
SusWrite @10s intervals: 224 237 243 197 213 249 MB/s
Read 361
Write 222
Mixed 269
SusWrite 227
60% 270 MB/s
4K Read 23
4K Write 21.8
4K Mixed 24.1
77% 23 MB/s
DQ Read 203
DQ Write 85.3
DQ Mixed 102
87% 130 MB/s
415GB free (System drive)
Firmware: 526ABBF0
SusWrite @10s intervals: 229 229 246 201 251 220 MB/s
Read 399
Write 274
Mixed 326
SusWrite 229
69% 307 MB/s
4K Read 18.5
4K Write 18.8
4K Mixed 20
64% 19.1 MB/s
DQ Read 229
DQ Write 108
DQ Mixed 133
108% 157 MB/s
417GB free (System drive)
Firmware: 600ABBF0
SusWrite @10s intervals: 197 156 211 94 31 204 MB/s
Read 326
Write 214
Mixed 314
SusWrite 149
56% 251 MB/s
4K Read 21.2
4K Write 8.6
4K Mixed 22
65% 17.3 MB/s
DQ Read 224
DQ Write 113
DQ Mixed 143
113% 160 MB/s
364 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 18,503,312 SSDs tested.


AmazonUS $8520 months
Send price feedback
Typical SSDNow KC300 480GB Builds (Compare 6,684 builds) See popular component choices, score breakdowns and rankings.
Gaming 14%
Tree trunk
Desktop 41%
Speed boat
Workstation 28%

System: HP Z400 Workstation

EDIT WITH CUSTOM PC BUILDER Value: 31% - 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) October 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 1660 $210Samsung 850 Evo 250GB $73
Intel Core i5-9600K $240Nvidia RTX 2060 $349Samsung 850 Evo 500GB $107
Intel Core i7-9700K $350Nvidia GTX 1660-Ti $270Samsung 850 Pro 256GB $200
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 64GB $88
Seagate Barracuda 3TB (2016) $78G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $70SanDisk Ultra Fit 32GB $14
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer Feedback