TEST
YOUR RAM
ADD TO PC
BUILD

Corsair CMD16GX4M2A2666C15

Dominator DDR4 2666 C15 3x8GB

▲ 500 ▼

Release date ≈ Q3 2017.

Average Bench: 70% (81st of 115)

Based on 5 user benchmarks.  Model: Corsair Dominator CMD16GX4M2A2666C15 3x8GB
Poor: 43%Average: 70% Great: 94%

Above average average bench

The Corsair Dominator DDR4 2666 C15 3x8GB averaged 30.0% 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.

Strengths

Avg. 16 Core Read Bench 26.9GB/s
Avg. 16 Core Mixed IO Bench 23.8GB/s

Unknown consistency

There are too few samples to reasonably determine how consistently this RAM perfroms. This result should be interpreted with caution.

Weaknesses

Avg. 1 Core Read Bench 18.1GB/s
Avg. Physical RAM Latency 75.1ns
ADVERTISEMENT

Average Bench

(Based on 5 samples)
Rank 8170%
Min Avg Max
14.9 MC Read 26.9 39.1
15.2 MC Write 23.5 34.1
12.4 MC Mixed 23.8 34.5
70.7% 24.7 GB/s
Min Avg Max
12.8 SC Read 18.1 24.9
15.2 SC Write 23 37.8
14.1 SC Mixed 22.6 29.1
60.6% 21.2 GB/s
Min Avg Max
57.7 Latency 75.1 97.4
53.3% 75.1 ns
User Benchmarks BenchMulti coreSingle coreLatency
The fastest RAM (mainstream) averages a speed of 100%
3 of 8 slots used
24GB DIMM clocked @ 2400 MHz
94.2% Outstanding
MC Read 39.1
MC Write 32.5
MC Mixed 34.5
101% 35.4 GB/s
SC Read 15.4
SC Write 23.2
SC Mixed 22.5
58% 20.4 GB/s
Latency 61.8
65% 61.8 ns
3 of 4 slots used
24GB DIMM DDR4 clocked @ 2667 MHz
89.8% Excellent
MC Read 32.4
MC Write 34.1
MC Mixed 27.9
90% 31.5 GB/s
SC Read 19.1
SC Write 37.8
SC Mixed 29.1
82% 28.7 GB/s
Latency 57.7
69% 57.7 ns
3 of 4 slots used
24GB DIMM DDR4 clocked @ 2133 MHz
66.8% Good
MC Read 27.5
MC Write 16
MC Mixed 26.1
66% 23.2 GB/s
SC Read 24.9
SC Write 15.9
SC Mixed 27.8
65% 22.9 GB/s
Latency 82.9
48% 82.9 ns
3 of 4 slots used
24GB DIMM DDR4 2133 MHz clocked @ 1067 MHz
56.5% Above average
MC Read 20.8
MC Write 19.6
MC Mixed 18
56% 19.5 GB/s
SC Read 18.2
SC Write 22.7
SC Mixed 19.4
57% 20.1 GB/s
Latency 97.4
41% 97.4 ns
3 of 4 slots used
24GB DIMM DDR4 clocked @ 2133 MHz
42.6% Average
MC Read 14.9
MC Write 15.2
MC Mixed 12.4
40% 14.2 GB/s
SC Read 12.8
SC Write 15.2
SC Mixed 14.1
40% 14 GB/s
Latency 75.6
53% 75.6 ns

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 67,355,026 RAM Kits tested

Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
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.

UserBenchmark of the month

Gaming Desktop ProGaming

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
  • - SkillBench (space shooter) tests user input accuracy
  • - 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
Memory Kit Rankings (Price vs Performance) June 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]

ADVERTISEMENT

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.

 Comments

Added n/a ago.
Your
opinion?
▲Like ▼Dislike
Ready to retire
Age: 6 years

Speed Comparisons

vs Corsair Vengeance LPX DDR4 3200 C16 2x8GB
vs Corsair Vengeance LPX DDR4 3000 C15 2x8GB
vs G.SKILL Trident Z DDR4 3200 C14 4x16GB
vs G.SKILL Trident Z DDR4 3600 C16 2x8GB
vs HyperX Fury DDR4 2133 C14 2x8GB
vs Corsair Vengeance LPX DDR4 2666 C16 2x8GB
vs G.SKILL Ripjaws 4 DDR4 2400 C14 8x16GB
vs Corsair Vengeance LPX DDR4 2133 C13 2x8GB
vs G.SKILL Trident Z DDR4 3200 C16 2x8GB

115 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

Computer Components FAQ
What is the UBM value for money rating?
What is UBM Effective Speed?
Thunderbolt speed?
Are USB 3.0 cables different?
USB 3.0 vs 2.0 speed difference?
Why buy USB 3.0 today?
USB 3.0 / 4.0 release dates and max speeds?
Graphics Cards
How to force Optimus or Switchable discrete GPUs?
What are the UBM DX11 GPU tests?
What are the UBM DX10 GPU tests?
What are the UBM DX09 GPU tests?
What is the Splatting GPU benchmark?
What is the Gravity (NBody) GPU benchmark?
Memory Kits
What is the RAM value for money rating?
What is the effective RAM speed index?
What is the system memory latency ladder?
ALL FAQs »

 Best User Rated
Why does UserBenchmark have a bad reputation on reddit?
Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
Why don’t PC brands endorse UserBenchmark?
Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
Why don’t youtubers promote UserBenchmark?
We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
Why does UserBenchmark have negative trustpilot reviews?
The 200+ trustpilot reviews are mostly written by virgin marketing accounts. Real users don't give a monkey's about big brands.
Why is UserBenchmark popular with users?
Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
CPUGPUSSD
Intel Core i5-12600K $174Nvidia RTX 4060 $293WD Black SN850X M.2 2TB $135
Intel Core i5-12400F $110Nvidia RTX 4060-Ti $385WD Black SN850X M.2 1TB $89
Intel Core i5-13600K $249Nvidia RTX 4070 $549Crucial T700 M.2 4TB $369
Today's hottest
Amazon Ebay
deals
If you buy something via a price link, UserBenchmark may earn a commission
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback