Average Bench: 79.9% (54th of 108)

Based on 2,159 user benchmarks.  Model: Kingston KHX2666C15S4/8G 2x8GB

Good average bench

The Kingston HyperX DDR4 2666 C15 2x8GB averaged 20.0% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Kingston HyperX DDR4 2666 C15 2x8GB near the top of the comparison list.


Avg. 16 Core Read Bench 30.8GB/s
Avg. 16 Core Write Bench 29.9GB/s

Good consistency

The range of scores (95th - 5th percentile) for the Kingston HyperX DDR4 2666 C15 2x8GB is 22.1%. This is a relatively narrow range which indicates that the Kingston HyperX DDR4 2666 C15 2x8GB performs reasonably consistently under varying real world conditions.


Avg. 1 Core Read Bench 17.9GB/s
Avg. Physical RAM Latency 71.2ns

Average Bench

(Based on 2,159 samples)
Min Avg Max
24.3 MC Read 30.8 34.2
23.4 MC Write 29.9 33.8
20.4 MC Mixed 24.5 28
81.1% 28.4 GB/s
Min Avg Max
10.9 SC Read 17.9 21.7
17.8 SC Write 29.6 35.6
15.8 SC Mixed 24.4 28
68.4% 24 GB/s
Min Avg Max
53.4 Latency 71.2 109
56.2% 71.2 ns
User Benchmarks Bench Multi core Single core Latency
The fastest RAM (mainstream) averages a speed of 100%
2 of 4 slots used
16GB SODIMM DDR4 clocked @ 2667 MHz
MC Read 33.7
MC Write 31.4
MC Mixed 25.1
86% 30.1 GB/s
SC Read 19.4
SC Write 29
SC Mixed 25.8
71% 24.7 GB/s
Latency 56.1
71% 56.1 ns
2 of 2 slots used
16GB SODIMM DDR4 clocked @ 2667 MHz
MC Read 32.1
MC Write 29.2
MC Mixed 24.2
81% 28.5 GB/s
SC Read 19
SC Write 30
SC Mixed 26.5
72% 25.2 GB/s
Latency 55
73% 55 ns
2 of 2 slots used
16GB SODIMM DDR4 clocked @ 2667 MHz
MC Read 31.1
MC Write 30.1
MC Mixed 24.9
82% 28.7 GB/s
SC Read 18.1
SC Write 25.3
SC Mixed 24.9
65% 22.8 GB/s
Latency 59.8
67% 59.8 ns
2,159 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 23,536,537 RAM Kits tested.

Typical HyperX DDR4 2666 C15 2x8GB Builds (Compare 2,667 builds) See popular component choices, score breakdowns and rankings.
Gaming 64%
Desktop 90%
Nuclear submarine
Workstation 65%
Battle cruiser

System: Lenovo 81SX


Popular HyperX DDR4 2666 C15 2x8GB systems:

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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.

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How it works

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  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
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  • - Reports are generated and presented on userbenchmark.com.
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Memory Kit Rankings (Price vs Performance) January 2020 RAM Rankings.

We calculate effective RAM speed which measures performance for typical desktop users. Effective speed is adjusted by current cost per GB to yield value for money. 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 Memory Kits. [RAMPro]


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.


108 Memory Kits (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different RAM Kits 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 $155Nvidia GTX 1660S (Super) $228Crucial MX500 250GB $48
Intel Core i5-9600K $219Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $370Nvidia RTX 2060 $332Samsung 850 Pro 512GB $204
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $640SanDisk Ultra Fit 32GB $16
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