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Corsair

CM4X8GF2666C16K4 4x8GB

▲ 500 ▼

Release date ≈ Q3 2017.

Average Bench: 87.1% (28th of 115)

Based on 151 user benchmarks.  Model: Corsair CM4X8GF2666C16K4 4x8GB
Poor: 67%Average: 87.1% Great: 114%

Popular builds with this RAM

Very good average bench

The Corsair CM4X8GF2666C16K4 4x8GB averaged just 12.9% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Corsair CM4X8GF2666C16K4 4x8GB near the top of the comparison list.

Strengths

Avg. 16 Core Write Bench 37.5GB/s
Avg. 16 Core Read Bench 31.4GB/s

Average consistency

The range of scores (95th - 5th percentile) for the Corsair CM4X8GF2666C16K4 4x8GB is 47%. This is a relatively wide range which indicates that the Corsair CM4X8GF2666C16K4 4x8GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 1 Core Read Bench 15.4GB/s
Avg. Physical RAM Latency 76.7ns
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Average Bench

(Based on 151 samples)
Rank 2887.1%
Min Avg Max
23.8 MC Read 31.4 42.3
20.5 MC Write 37.5 59.4
22.1 MC Mixed 28.1 39.5
92.4% 32.3 GB/s
Min Avg Max
6.7 SC Read 15.4 24.4
19.2 SC Write 28 38.1
9.5 SC Mixed 20.4 30.2
60.8% 21.3 GB/s
Min Avg Max
58.1 Latency 76.7 104
52.2% 76.7 ns
User Benchmarks BenchMulti coreSingle coreLatency
The fastest RAM (mainstream) averages a speed of 100%
4 of 4 slots used
32GB DIMM DDR4 clocked @ 2133 MHz
124% Outstanding
MC Read 88.3
MC Write 28.1
MC Mixed 29
138% 48.5 GB/s
SC Read 24
SC Write 16.1
SC Mixed 27.7
65% 22.6 GB/s
Latency 82.8
48% 82.8 ns
4 of 4 slots used
32GB DIMM DDR4 clocked @ 2133 MHz
111% Outstanding
MC Read 70.8
MC Write 28.1
MC Mixed 30
123% 43 GB/s
SC Read 24.5
SC Write 16.1
SC Mixed 27.4
65% 22.7 GB/s
Latency 82.1
49% 82.1 ns
4 of 8 slots used
32GB DIMM DDR4 clocked @ 2400 MHz
100% Outstanding
MC Read 36.8
MC Write 42.3
MC Mixed 36.5
110% 38.5 GB/s
SC Read 15.1
SC Write 22.2
SC Mixed 21.1
56% 19.5 GB/s
Latency 73.4
54% 73.4 ns
4 of 4 slots used
32GB DIMM DDR4 clocked @ 2666 MHz
82% Excellent
MC Read 30.7
MC Write 30.9
MC Mixed 24.9
82% 28.8 GB/s
SC Read 18.3
SC Write 34.3
SC Mixed 25.4
74% 26 GB/s
Latency 64
62% 64 ns
4 of 4 slots used
32GB DIMM DDR4 clocked @ 2666 MHz
81.2% Excellent
MC Read 35.1
MC Write 20
MC Mixed 32.3
83% 29.1 GB/s
SC Read 25.9
SC Write 19.8
SC Mixed 30.8
73% 25.5 GB/s
Latency 88.4
45% 88.4 ns
4 of 4 slots used
32GB DIMM DDR4 clocked @ 2667 MHz
80.9% Excellent
MC Read 30.9
MC Write 30.1
MC Mixed 25.5
82% 28.8 GB/s
SC Read 18
SC Write 29
SC Mixed 24.9
68% 24 GB/s
Latency 65.9
61% 65.9 ns
4 of 4 slots used
32GB DIMM DDR4 clocked @ 2666 MHz
80.8% Excellent
MC Read 30.2
MC Write 30.5
MC Mixed 24.6
81% 28.4 GB/s
SC Read 18.2
SC Write 33.3
SC Mixed 26
74% 25.8 GB/s
Latency 67.5
59% 67.5 ns
4 of 8 slots used
32GB DIMM DDR4 clocked @ 2133 MHz
79.2% Very good
MC Read 22.2
MC Write 46.8
MC Mixed 23.4
88% 30.8 GB/s
SC Read 8.2
SC Write 21.2
SC Mixed 10.2
38% 13.2 GB/s
Latency 84.5
47% 84.5 ns
4 of 4 slots used
32GB DIMM DDR4 clocked @ 2133 MHz
64.8% Good
MC Read 26.4
MC Write 16.1
MC Mixed 25.6
65% 22.7 GB/s
SC Read 23.1
SC Write 16.2
SC Mixed 26.7
63% 22 GB/s
Latency 95.3
42% 95.3 ns
151 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 67,003,027 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 CM4X8GF2666C16K4 4x8GB Builds (Compare 1,207 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 101%
UFO
Workstation
Workstation 84%
Aircraft carrier

System: PC Intel Z370

CPU
Core i7-9700KIntel  $249Bench 97%, 550,833 samples299x
Core i9-9900KIntel  $409Bench 98%, 354,223 samples221x
Core i7-8700KIntel  $186Bench 88%, 746,287 samples192x
GPU
RTX 2060Nvidia  $324Bench 90%, 645,160 samples117x
RTX 2080-TiNvidia  $441Bench 156%, 357,946 samples105x
RTX 2070S (Super)Nvidia  $210Bench 115%, 663,603 samples92x
SSD
970 Evo Plus NVMe PCIe M.2 1TBSamsung  $95Bench 310%, 455,997 samples74x
860 Evo 500GBSamsung  $80Bench 105%, 762,998 samples54x
660p NVMe PCIe M.2 512GBIntel  $60Bench 156%, 162,275 samples32x
RAM
CM4X8GF2666C16K4 4x8GBCorsairBench 87%, 151 samples1x
EDIT WITH CUSTOM PC BUILDER Value: 86% - Excellent Total price: $668

Popular CM4X8GF2666C16K4 4x8GB systems:

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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
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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 Trident Z DDR4 3200 C16 2x8GB
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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.

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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair 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
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