CorsairCMK16GX4M2A2666C16(|R)
CorsairCML16GX3M2A1600C10
VS
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Release date ≤ Q4 2015.

Real World Speed
Performance profile from 57,670 user samples
46,009 User Benchmarks
Best Bench: 96% @ 3000 MHz
Worst Bench: 54% @ 1067 MHz
Poor: 54% Great: 96%
SPEED RANK: 58th / 108
11,661 User Benchmarks
Best Bench: 62% @ 2000 MHz
Worst Bench: 28% @ 1333 MHz
Poor: 28% Great: 62%
SPEED RANK: 90th / 108
Effective Speed
Effective RAM Speed
78.4 % Much faster effective speed.
+54%
50.9 %
MC Read
Avg. 16 Core Read Bench
30.2 GB/s Much faster multi-core read.
+69%
17.9 GB/s
MC Write
Avg. 16 Core Write Bench
29.1 GB/s Much faster multi-core write.
+59%
18.3 GB/s
MC Mixed
Avg. 16 Core Mixed IO Bench
24.3 GB/s Much faster multi-core mixed.
+52%
16 GB/s
MC Read
16 Core Read Bench
37.8 GB/s Much faster multi-core read.
+71%
22.1 GB/s
MC Write
16 Core Write Bench
36.2 GB/s Much faster multi-core write.
+59%
22.7 GB/s
MC Mixed
16 Core Mixed IO Bench
31.4 GB/s Much faster multi-core mixed.
+61%
19.5 GB/s
Market Share
Based on 20,308,225 RAM Kits tested.
Market Share
Market Share (trailing 30 days)
0.41 % Hugely higher market share.
+583%
0.06 %
User Rating
UBM User Rating
65 % Much more popular.
+30%
50 %
Age
Newest
60 Months 45+ Months More recent.
+25%
SC Read
Avg. 1 Core Read Bench
18.3 GB/s Much faster single-core read.
+37%
13.4 GB/s
SC Write
Avg. 1 Core Write Bench
28.2 GB/s Much faster single-core write.
+67%
16.9 GB/s
SC Mixed
Avg. 1 Core Mixed IO Bench
23.7 GB/s Much faster single-core mixed.
+50%
15.8 GB/s
SC Read
1 Core Read Bench
23.5 GB/s Much faster single-core read.
+36%
17.3 GB/s
SC Write
1 Core Write Bench
37.1 GB/s Much faster single-core write.
+62%
22.9 GB/s
SC Mixed
1 Core Mixed IO Bench
28.7 GB/s Much faster single-core mixed.
+40%
20.5 GB/s
Latency
Avg. Physical RAM Latency
70.9 ns +2% 72.3 ns
Latency
Physical RAM Latency
55.2 ns Slightly lower access latency.
+7%
59.3 ns
Capacity
Capacity
16GB 16GB
Memory Kit Rankings (Price vs Performance) October 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]

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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 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.

UserBenchmark of the month

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.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-9400F $140Nvidia GTX 1660 $220Samsung 850 Evo 250GB $55
Intel Core i5-9600K $225Nvidia GTX 1660-Ti $275Samsung 850 Evo 500GB $107
Intel Core i7-9700K $288Nvidia RTX 2060S (Super) $430Samsung 850 Pro 256GB $200
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $37G.SKILL Trident Z DDR4 3200 C14 4x16GB $603SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $83Corsair Vengeance LPX DDR4 3200 C16 2x8GB $70SanDisk Ultra Fit 32GB $14
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