TEST
YOUR RAM
ADD TO PC
BUILD

Corsair

CMU32GX4M2A2666C16 4x16GB

▲ 500 ▼

Release date ≈ Q1 2017.

Average Bench: 89.3% (22nd of 115)

Based on 89 user benchmarks.  Model: Corsair CMU32GX4M2A2666C16 4x16GB
Poor: 68%Average: 89.3% Great: 128%

Popular builds with this RAM

Very good average bench

The Corsair CMU32GX4M2A2666C16 4x16GB averaged just 10.7% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Corsair CMU32GX4M2A2666C16 4x16GB near the top of the comparison list.

Strengths

Avg. 16 Core Write Bench 37.1GB/s
Avg. 16 Core Read Bench 32.2GB/s

Poor consistency

The range of scores (95th - 5th percentile) for the Corsair CMU32GX4M2A2666C16 4x16GB is 60.4%. This is a particularly wide range which indicates that the Corsair CMU32GX4M2A2666C16 4x16GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 1 Core Read Bench 16.3GB/s
Avg. Physical RAM Latency 82.9ns
ADVERTISEMENT

Average Bench

(Based on 89 samples)
Rank 2289.3%
Min Avg Max
22.3 MC Read 32.2 51.7
20 MC Write 37.1 59.2
22.1 MC Mixed 30.6 49.8
95.1% 33.3 GB/s
Min Avg Max
6.8 SC Read 16.3 24.8
17.5 SC Write 28.1 37.9
9.4 SC Mixed 21.8 31.5
63.1% 22.1 GB/s
Min Avg Max
60.8 Latency 82.9 120
48.3% 82.9 ns
User Benchmarks BenchMulti coreSingle coreLatency
The fastest RAM (mainstream) averages a speed of 100%
4 of 8 slots used
64GB DIMM DDR4 clocked @ 2666 MHz
110% Outstanding
MC Read 36.3
MC Write 61
MC Mixed 35.8
127% 44.4 GB/s
SC Read 7.8
SC Write 22.5
SC Mixed 10.5
39% 13.6 GB/s
Latency 83.4
48% 83.4 ns
4 of 8 slots used
64GB DIMM DDR4 clocked @ 2666 MHz
106% Outstanding
MC Read 34.9
MC Write 60.1
MC Mixed 34.5
123% 43.2 GB/s
SC Read 8
SC Write 20.1
SC Mixed 10.5
37% 12.9 GB/s
Latency 95.6
42% 95.6 ns
4 of 4 slots used
64GB DIMM DDR4 clocked @ 2667 MHz
99.5% Outstanding
MC Read 44.6
MC Write 33
MC Mixed 33
105% 36.9 GB/s
SC Read 26.6
SC Write 20
SC Mixed 33.7
76% 26.8 GB/s
Latency 80.6
50% 80.6 ns
4 of 4 slots used
64GB DIMM DDR4 clocked @ 2666 MHz
82.5% Excellent
MC Read 34.9
MC Write 20.1
MC Mixed 32
83% 29 GB/s
SC Read 30
SC Write 20.3
SC Mixed 35.5
82% 28.6 GB/s
Latency 86
46% 86 ns
4 of 4 slots used
64GB DIMM DDR4 clocked @ 2133 MHz
80.9% Excellent
MC Read 35
MC Write 26.7
MC Mixed 26.5
84% 29.4 GB/s
SC Read 24.8
SC Write 16.2
SC Mixed 28.7
66% 23.2 GB/s
Latency 83.1
48% 83.1 ns
4 of 4 slots used
64GB DIMM DDR4 clocked @ 2666 MHz
77.9% Very good
MC Read 28
MC Write 31.5
MC Mixed 25.5
81% 28.3 GB/s
SC Read 14
SC Write 29.7
SC Mixed 20.9
62% 21.5 GB/s
Latency 78.8
51% 78.8 ns
89 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 67,040,709 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
Typical CMU32GX4M2A2666C16 4x16GB Builds (Compare 177 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 99%
Nuclear submarine
Desktop
Desktop 85%
Aircraft carrier
Workstation
Workstation 119%
UFO

Motherboard: MSI X399 SLI PLUS (MS-7B09)

CPU
Ryzen TR 1950XAMD  $225Bench 77%, 23,641 samples53x
Ryzen TR 1920XAMD  $800Bench 78%, 10,440 samples39x
Ryzen TR 2950XAMD  $1,075Bench 81%, 10,169 samples30x
GPU
GTX 1080-TiNvidia  $485Bench 124%, 840,268 samples19x
RTX 2080-TiNvidia  $441Bench 156%, 357,946 samples12x
RTX 3070Nvidia  $400Bench 148%, 619,642 samples9x
SSD
970 Evo NVMe PCIe M.2 500GBSamsung  $43Bench 273%, 381,216 samples7x
970 Evo Plus NVMe PCIe M.2 1TBSamsung  $95Bench 310%, 455,997 samples6x
860 Evo 1TBSamsung  $130Bench 112%, 602,853 samples5x
RAM
CMU32GX4M2A2666C16 4x16GBCorsairBench 89%, 89 samples1x
EDIT WITH CUSTOM PC BUILDER Value: 70% - Good Total price: $753

Popular CMU32GX4M2A2666C16 4x16GB compatible motherboards:

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) April 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: 7 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 Corsair Vengeance LPX DDR4 2133 C13 2x8GB
vs G.SKILL Ripjaws 4 DDR4 2400 C14 8x16GB
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
The Best.
CPUGPUSSD
Intel Core i5-13600K $273Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $177Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
If you make a purchase via one of these links, our site may earn a commission
Today's hottest
Amazon Ebay
deals
CPU GPU SSD HDD USB RAM MBD
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback