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Corsair

CMW16GX4M2A2666C16 2x8GB

▲ 502 ▼

Release date ≈ Q2 2018.

Average Bench: 75% (67th of 113)

Based on 19,868 user benchmarks.  Model: Corsair CMW16GX4M2A2666C16 2x8GB
Poor: 55%Average: 75% Great: 91%

Popular builds with this RAM

Good average bench

The Corsair CMW16GX4M2A2666C16 2x8GB averaged 25.0% 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 29.4GB/s
Avg. 16 Core Write Bench 27.2GB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Corsair CMW16GX4M2A2666C16 2x8GB is 36.5%. 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 17.8GB/s
Avg. Physical RAM Latency 74.6ns
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Average Bench

(Based on 19,868 samples)
Rank 6775%
Min Avg Max
20.5 MC Read 29.4 35.9
16.5 MC Write 27.2 35.4
16.5 MC Mixed 23.4 31
76.2% 26.7 GB/s
Min Avg Max
12 SC Read 17.8 24.3
15.2 SC Write 26.7 36.4
13.8 SC Mixed 23.1 28.7
64.4% 22.5 GB/s
Min Avg Max
58.5 Latency 74.6 104
53.6% 74.6 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 @ 3600 MHz
93.5% Outstanding
MC Read 34.5
MC Write 27.4
MC Mixed 36.8
94% 32.9 GB/s
SC Read 28.7
SC Write 27.6
SC Mixed 38.6
90% 31.6 GB/s
Latency 69.7
57% 69.7 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
89.7% Excellent
MC Read 35
MC Write 35.9
MC Mixed 24.9
91% 31.9 GB/s
SC Read 18.4
SC Write 36.3
SC Mixed 25.9
77% 26.9 GB/s
Latency 60.8
66% 60.8 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
87.7% Excellent
MC Read 34.2
MC Write 34.4
MC Mixed 24.6
89% 31.1 GB/s
SC Read 20
SC Write 32.3
SC Mixed 25.4
74% 25.9 GB/s
Latency 55.8
72% 55.8 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2667 MHz
75.3% Very good
MC Read 30.2
MC Write 29.9
MC Mixed 23.5
80% 27.9 GB/s
SC Read 13.4
SC Write 22.8
SC Mixed 17
51% 17.7 GB/s
Latency 73.2
55% 73.2 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2133 MHz
74.4% Very good
MC Read 28.3
MC Write 28.9
MC Mixed 21
74% 26.1 GB/s
SC Read 17.4
SC Write 29.7
SC Mixed 22.8
67% 23.3 GB/s
Latency 65.8
61% 65.8 ns
2 of 2 slots used
16GB DIMM DDR4 clocked @ 2133 MHz
72.1% Very good
MC Read 27.9
MC Write 27.6
MC Mixed 20.3
72% 25.3 GB/s
SC Read 17.8
SC Write 28.1
SC Mixed 21
64% 22.3 GB/s
Latency 66.1
61% 66.1 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2133 MHz
65.2% Good
MC Read 27.7
MC Write 17.8
MC Mixed 25.4
68% 23.6 GB/s
SC Read 17.8
SC Write 17.3
SC Mixed 22.4
55% 19.2 GB/s
Latency 104
38% 104 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2133 MHz
64.1% Good
MC Read 27.2
MC Write 17.7
MC Mixed 24.7
66% 23.2 GB/s
SC Read 17.3
SC Write 17.5
SC Mixed 20.9
53% 18.6 GB/s
Latency 101
40% 101 ns
19,868 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 43,299,716 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 85,003 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  $199Bench 83%, 842,939 samples20,957x
Ryzen 7 2700XAMD  $210Bench 81%, 479,643 samples13,063x
Ryzen 7 3700XAMD  $305Bench 86%, 591,493 samples11,146x
GPU
RTX 2070S (Super)Nvidia  $510Bench 117%, 480,292 samples6,681x
RX 5700-XTAMD  $400Bench 104%, 345,322 samples6,242x
RTX 2060Nvidia  $390Bench 89%, 446,526 samples6,063x
SSD
860 Evo 500GBSamsung  $75Bench 106%, 605,938 samples3,900x
970 Evo Plus NVMe PCIe M.2 500GBSamsung  $85Bench 287%, 287,660 samples3,056x
970 Evo NVMe PCIe M.2 500GBSamsung  $85Bench 270%, 348,027 samples2,810x
RAM
CMW16GX4M2A2666C16 2x8GBCorsairBench 75%, 19,868 samples1x
EDIT WITH CUSTOM PC BUILDER Value: 61% - Good Total price: $914

Popular CMW16GX4M2A2666C16 2x8GB compatible motherboards:

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Memory Kit Rankings (Price vs Performance) June 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
vs Corsair Vengeance LPX DDR4 3000 C15 2x8GB
vs G.SKILL Trident Z DDR4 3200 C14 4x16GB
vs HyperX Fury DDR4 2133 C14 2x8GB
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
vs G.SKILL Ripjaws 4 DDR4 2400 C14 8x16GB

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 i5-11400F $220Nvidia RTX 3070 $500Crucial MX500 250GB $40
Intel Core i5-11600K $259Nvidia RTX 3060-Ti $400Samsung 850 Evo 120GB $78
Intel Core i7-10700K $300Nvidia RTX 3080 $700Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $94SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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