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Corsair

CMW16GX4M2A2666C16 2x8GB

▲ 502 ▼

Release date ≈ Q2 2018.

Average Bench: 74.8% (70th of 113)

Based on 21,510 user benchmarks.  Model: Corsair CMW16GX4M2A2666C16 2x8GB
Poor: 54%Average: 74.8% Great: 92%

Popular builds with this RAM

Good average bench

The Corsair CMW16GX4M2A2666C16 2x8GB averaged 25.1% 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 29.7GB/s
Avg. 16 Core Write Bench 26.5GB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Corsair CMW16GX4M2A2666C16 2x8GB is 37.7%. This is a relatively wide range which indicates that the Corsair CMW16GX4M2A2666C16 2x8GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 1 Core Read Bench 18.1GB/s
Avg. Physical RAM Latency 77ns
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Average Bench

(Based on 21,510 samples)
Rank 7074.8%
Min Avg Max
20.7 MC Read 29.7 36.6
16.1 MC Write 26.5 35.6
17.7 MC Mixed 23.8 31.1
76.2% 26.7 GB/s
Min Avg Max
12 SC Read 18.1 24.8
15.1 SC Write 26 36.7
14.1 SC Mixed 23.1 29.7
64.1% 22.4 GB/s
Min Avg Max
58.2 Latency 77 106
52% 77 ns
User Benchmarks Bench Multi core Single core Latency
The fastest RAM (mainstream) averages a speed of 100%
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2667 MHz
83.5% Excellent
MC Read 32.2
MC Write 32.2
MC Mixed 22.5
83% 29 GB/s
SC Read 20
SC Write 36.7
SC Mixed 27.7
80% 28.1 GB/s
Latency 61.6
65% 61.6 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
83.5% Excellent
MC Read 32.3
MC Write 32.4
MC Mixed 23.2
84% 29.3 GB/s
SC Read 18.1
SC Write 36
SC Mixed 26.7
77% 26.9 GB/s
Latency 64.5
62% 64.5 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2133 MHz
75.9% Very good
MC Read 29.8
MC Write 25.7
MC Mixed 26.2
78% 27.2 GB/s
SC Read 19
SC Write 27.9
SC Mixed 22.7
66% 23.2 GB/s
Latency 87
46% 87 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2133 MHz
72.5% Very good
MC Read 28
MC Write 27.4
MC Mixed 21.3
73% 25.6 GB/s
SC Read 16
SC Write 29.1
SC Mixed 21.6
64% 22.2 GB/s
Latency 69.3
58% 69.3 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2133 MHz
69% Good
MC Read 29.1
MC Write 18.2
MC Mixed 26.7
70% 24.7 GB/s
SC Read 21.5
SC Write 18.3
SC Mixed 26.4
63% 22.1 GB/s
Latency 104
38% 104 ns
2 of 2 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
62.9% Good
MC Read 24
MC Write 26
MC Mixed 21.2
68% 23.7 GB/s
SC Read 8.5
SC Write 14
SC Mixed 14
35% 12.2 GB/s
Latency 82.5
48% 82.5 ns
21,510 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 45,696,537 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 CMW16GX4M2A2666C16 2x8GB Builds (Compare 93,469 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 99%
Nuclear submarine
Desktop
Desktop 87%
Aircraft carrier
Workstation
Workstation 94%
Nuclear submarine

Motherboard: Asus ROG STRIX B450-F GAMING - $130

CPU
Ryzen 5 3600AMD  $270Bench 84%, 980,212 samples22,868x
Ryzen 7 2700XAMD  $297Bench 81%, 541,373 samples14,170x
Ryzen 7 3700XAMD  $303Bench 87%, 646,253 samples12,318x
GPU
RTX 2070S (Super)Nvidia  $510Bench 117%, 505,105 samples7,183x
RX 5700-XTAMD  $400Bench 105%, 368,606 samples6,657x
RTX 2060Nvidia  $390Bench 88%, 510,381 samples6,623x
SSD
860 Evo 500GBSamsung  $80Bench 106%, 609,576 samples4,195x
970 Evo Plus NVMe PCIe M.2 500GBSamsung  $75Bench 287%, 333,287 samples3,347x
970 Evo NVMe PCIe M.2 500GBSamsung  $75Bench 267%, 346,415 samples3,047x
RAM
CMW16GX4M2A2666C16 2x8GBCorsairBench 75%, 21,510 samples1x
EDIT WITH CUSTOM PC BUILDER Value: 61% - Good Total price: $990

Popular CMW16GX4M2A2666C16 2x8GB compatible motherboards:

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  • - Drive tests include: read, write, sustained write and mixed IO.
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Memory Kit Rankings (Price vs Performance) September 2021 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.

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Speed Comparisons

vs Corsair Vengeance LPX DDR4 3200 C16 2x8GB
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vs Corsair Vengeance LPX DDR4 2666 C16 2x8GB
vs G.SKILL Trident Z DDR4 3600 C16 2x8GB
vs G.SKILL Trident Z DDR4 3200 C16 2x8GB
vs Corsair Vengeance LPX DDR4 2133 C13 2x8GB
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113 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.

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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 850 Evo 120GB $183
Intel Core i7-11700K $346Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $78SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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