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Corsair
CorsairCMK8GX4M2A2666C16
▲ 500 ▼
  

Release date ≈ Q4 2019.

VS
▲ 507 ▼
  

Release date ≤ Q4 2015.

Effective Speed 
+3%
Real World Speed
Performance profile from 16,494 user samples
Benchmark your RAM here
4 User Benchmarks
Best Bench: 79%
Worst Bench: 77%
Poor: 77% Great: 79%
SPEED RANK: 78th / 132
16,490 User Benchmarks
Best Bench: 98% @ 3200 MHz
Worst Bench: 50% @ 2133 MHz
Poor: 50% Great: 98%
SPEED RANK: 84th / 132
Effective Speed
Effective RAM Speed 		78.5 % +3% 76.3 %
Average Score 
+0%
MC Read
Avg. 16 Core Read Bench 		28.5 GB/s 29.2 GB/s +2%
MC Write
Avg. 16 Core Write Bench 		29.2 GB/s +3% 28.4 GB/s
MC Mixed
Avg. 16 Core Mixed IO Bench 		24.5 GB/s 24.5 GB/s
Peak Score 
+28%
MC Read
16 Core Read Bench 		29 GB/s 38.2 GB/s Much faster multi-core read.
+32%
MC Write
16 Core Write Bench 		30.3 GB/s 36.8 GB/s Faster multi-core write.
+21%
MC Mixed
16 Core Mixed IO Bench 		25 GB/s 32.4 GB/s Faster multi-core mixed.
+30%
Value & Sentiment 
+∞%
Market Share
Based on 68,296,430 RAM Kits tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0.02 % Insanely higher market share.
+∞%
User Rating
UBM User Rating 		50 % 50 %
Nice To Haves 
+4%
Age
Newest 		59+ Months Much more recent.
+44% 		106+ Months
SC Read
Avg. 1 Core Read Bench 		17.9 GB/s 18.2 GB/s +2%
SC Write
Avg. 1 Core Write Bench 		31.8 GB/s Faster single-core write.
+16% 		27.5 GB/s
SC Mixed
Avg. 1 Core Mixed IO Bench 		25.5 GB/s Faster single-core mixed.
+14% 		22.4 GB/s
SC Read
1 Core Read Bench 		19.1 GB/s 25.4 GB/s Much faster single-core read.
+33%
SC Write
1 Core Write Bench 		33.1 GB/s 37.5 GB/s Faster single-core write.
+13%
SC Mixed
1 Core Mixed IO Bench 		26.3 GB/s 28.7 GB/s Slightly faster single-core mixed.
+9%
Latency
Avg. Physical RAM Latency 		63.2 ns Lower access latency.
+22% 		81 ns
Latency
Physical RAM Latency 		61.6 ns 58.9 ns +4%
Specifications 
Capacity
Capacity 		16GB 8GB
User Builds 
4
16,490
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

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Memory Kit Rankings (Price vs Performance) November 2024 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.
How Fast Is Your RAM? (Bench your build) Size up your PC in less than a minute

Welcome to our 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 value for money upgrades.

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  • - CPU tests include: integer, floating and string
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  • - Drive tests include: read, write, sustained write and mixed IO
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  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
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 Frequently Asked Questions

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Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
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The Best
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Intel Core i5-13600K $210Nvidia RTX 4060 $280WD Black SN850X M.2 2TB $135
Intel Core i5-12600K $159Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $84
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $370
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