Average Bench: 45.1% (95th of 108)

Based on 22 user benchmarks.  Model: Unknown? CMK8GX4M1A2666C16 1x8GB
Poor: 37%Average: 45.1% Great: 52%

Below average average bench

The Unknown? CMK8GX4M1A2666C16 1x8GB averaged 54.9% 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 16.8GB/s
Avg. 1 Core Read Bench 16GB/s

Very good consistency

The range of scores (95th - 5th percentile) for the Unknown? CMK8GX4M1A2666C16 1x8GB is just 15%. 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 14.1GB/s
Avg. 16 Core Write Bench 14.8GB/s

Average Bench

(Based on 22 samples)
Min Avg Max
13.6 MC Read 16.8 20
10.5 MC Write 14.8 18.7
12.1 MC Mixed 14.1 16.3
43.5% 15.2 GB/s
Min Avg Max
12.4 SC Read 16 19.3
11.8 SC Write 15.8 19.3
12.2 SC Mixed 15.2 18.1
44.7% 15.7 GB/s
Min Avg Max
75.1 Latency 92.1 111
43.5% 92.1 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 2800 MHz clocked @ 1400 MHz
MC Read 19.2
MC Write 15.2
MC Mixed 15.6
48% 16.7 GB/s
SC Read 17.6
SC Write 18.7
SC Mixed 17.1
51% 17.8 GB/s
Latency 82.4
48% 82.4 ns
1 of 4 slots used
8GB DIMM DDR4 2134 MHz clocked @ 1067 MHz
MC Read 14.8
MC Write 14.2
MC Mixed 13.2
40% 14.1 GB/s
SC Read 14.6
SC Write 14
SC Mixed 14.1
41% 14.2 GB/s
Latency 111
36% 111 ns
1 of 2 slots used
8GB DIMM DDR4 2134 MHz clocked @ 1067 MHz
MC Read 14.9
MC Write 13.7
MC Mixed 12.8
39% 13.8 GB/s
SC Read 14.5
SC Write 13.9
SC Mixed 14.2
41% 14.2 GB/s
Latency 90.3
44% 90.3 ns
22 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 17,906,816 RAM Kits tested.

Typical CMK8GX4M1A2666C16 1x8GB Builds (Compare 8,643 builds) See popular component choices, score breakdowns and rankings.
Gaming 68%
Battle cruiser
Desktop 79%
Workstation 64%

Motherboard: Asrock B450M Pro4 - $75

EDIT WITH CUSTOM PC BUILDER Value: 139% - Outstanding Total price: $440

Popular CMK8GX4M1A2666C16 1x8GB compatible motherboards:

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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

  • - 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.
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Memory Kit Rankings (Price vs Performance) July 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 i7-8700K $350Nvidia GTX 1070 $400Samsung 850 Evo 250GB $104
AMD Ryzen 5 2600 $127Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $103
AMD Ryzen 7 2700X $248Nvidia GTX 1080-Ti $709Samsung 850 Pro 256GB $97
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $68SanDisk Extreme 64GB $128
Seagate Barracuda 3TB (2016) $70G.SKILL Trident Z DDR4 3200 C14 4x16GB $606SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $78SanDisk Ultra Fit 32GB $12
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