Average Bench: 44.7% (95th of 108)

Based on 25 user benchmarks.  Model: Unknown? CMK8GX4M1A2666C16 1x8GB
Poor: 37%Average: 44.7% Great: 52%

Below average average bench

The Unknown? CMK8GX4M1A2666C16 1x8GB averaged 55.3% 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. 16 Core Read Bench 16.7GB/s
Avg. 1 Core Read Bench 15.8GB/s

Very good consistency

The range of scores (95th - 5th percentile) for the Unknown? CMK8GX4M1A2666C16 1x8GB is just 15.1%. This is a relatively narrow range which indicates that the Unknown? CMK8GX4M1A2666C16 1x8GB performs reasonably consistently under varying real world conditions.


Avg. 16 Core Mixed IO Bench 14GB/s
Avg. 16 Core Write Bench 14.6GB/s

Average Bench

(Based on 25 samples)
Min Avg Max
13.1 MC Read 16.7 20
10.5 MC Write 14.6 18.7
12.1 MC Mixed 14 16.3
43.2% 15.1 GB/s
Min Avg Max
9.4 SC Read 15.8 19.3
5.3 SC Write 15.3 19.3
8.9 SC Mixed 14.9 18.1
43.9% 15.3 GB/s
Min Avg Max
75.1 Latency 92.3 111
43.3% 92.3 ns
User Benchmarks Bench Multi core Single core Latency
The fastest RAM (mainstream) averages a speed of 100%
1 of 4 slots used
8GB DIMM DDR4 3000 MHz clocked @ 1500 MHz
MC Read 20.5
MC Write 17.6
MC Mixed 16.1
52% 18.1 GB/s
SC Read 17
SC Write 16.7
SC Mixed 16.4
48% 16.7 GB/s
Latency 77.8
51% 77.8 ns
1 of 4 slots used
8GB DIMM DDR4 2134 MHz clocked @ 1067 MHz
MC Read 15.2
MC Write 13.6
MC Mixed 12.9
40% 13.9 GB/s
SC Read 14.7
SC Write 14.8
SC Mixed 14.2
42% 14.6 GB/s
Latency 98.3
41% 98.3 ns
25 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,251,507 RAM Kits tested.

Typical CMK8GX4M1A2666C16 1x8GB Builds (Compare 14,417 builds) See popular component choices, score breakdowns and rankings.
Gaming 55%
Desktop 71%
Workstation 53%

Motherboard: Asrock B450M Pro4 - $70

EDIT WITH CUSTOM PC BUILDER Value: 80% - Very good Total price: $406

Popular CMK8GX4M1A2666C16 1x8GB compatible motherboards:

How Fast Is Your RAM? (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.

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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.
Memory Kit Rankings (Price vs Performance) November 2019 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 $140Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $45
Intel Core i5-9600K $195AMD RX 590 $185Samsung 850 Evo 120GB $150
Intel Core i7-9700K $340Nvidia RTX 2060 $325Samsung 860 Evo 250GB $51
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3000 C15 2x8GB $68SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $34G.SKILL Trident Z DDR4 3200 C14 4x16GB $609SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85Corsair Vengeance LPX DDR4 3200 C16 2x8GB $68SanDisk Extreme 16GB $24
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