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CorsairCMK5S16G3B56Z40A2
CorsairCMK8GX4M2A2666C16
▲ 500 ▼
  

Release date ≈ Q4 2022.

VS
▲ 507 ▼
  

Release date ≤ Q4 2015.

Effective Speed 
+122%
Real World Speed
Performance profile from 16,627 user samples
Benchmark your RAM here
137 User Benchmarks
Best Bench: 182% @ 5600 MHz
Worst Bench: 143% @ 4800 MHz
Poor: 143% Great: 182%
SPEED RANK: 12th / 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 		169 % Hugely faster effective speed.
+122% 		76.3 %
Average Score 
+138%
MC Read
Avg. 16 Core Read Bench 		69.6 GB/s Hugely faster multi-core read.
+138% 		29.2 GB/s
MC Write
Avg. 16 Core Write Bench 		63.4 GB/s Hugely faster multi-core write.
+123% 		28.4 GB/s
MC Mixed
Avg. 16 Core Mixed IO Bench 		61.9 GB/s Hugely faster multi-core mixed.
+153% 		24.5 GB/s
Peak Score 
+101%
MC Read
16 Core Read Bench 		76.5 GB/s Hugely faster multi-core read.
+100% 		38.2 GB/s
MC Write
16 Core Write Bench 		70.8 GB/s Hugely faster multi-core write.
+92% 		36.8 GB/s
MC Mixed
16 Core Mixed IO Bench 		67.9 GB/s Hugely faster multi-core mixed.
+110% 		32.4 GB/s
Value & Sentiment 
+∞%
Market Share
Based on 68,235,219 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 
+63%
Age
Newest 		24+ Months Much more recent.
+77% 		106+ Months
SC Read
Avg. 1 Core Read Bench 		31 GB/s Much faster single-core read.
+70% 		18.2 GB/s
SC Write
Avg. 1 Core Write Bench 		53.1 GB/s Hugely faster single-core write.
+93% 		27.5 GB/s
SC Mixed
Avg. 1 Core Mixed IO Bench 		37.6 GB/s Much faster single-core mixed.
+68% 		22.4 GB/s
SC Read
1 Core Read Bench 		54.5 GB/s Hugely faster single-core read.
+115% 		25.4 GB/s
SC Write
1 Core Write Bench 		61.8 GB/s Much faster single-core write.
+65% 		37.5 GB/s
SC Mixed
1 Core Mixed IO Bench 		56.8 GB/s Hugely faster single-core mixed.
+98% 		28.7 GB/s
Latency
Avg. Physical RAM Latency 		80.1 ns +1% 81 ns
Latency
Physical RAM Latency 		71.2 ns 58.9 ns Lower access latency.
+17%
Specifications 
Capacity
Capacity 		32GB 8GB
User Builds 
137
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.
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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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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
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  • - 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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We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
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The Best
CPUGPUSSD
Intel Core i5-12600K $169Nvidia RTX 4060 $295WD Black SN850X M.2 2TB $135
Intel Core i5-12400F $111Nvidia RTX 4060-Ti $345WD Black SN850X M.2 1TB $80
Intel Core i5-13600K $225Nvidia RTX 4070 $500Crucial T700 M.2 4TB $350
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