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Corsair

CM4X8GF2666Z16K2 2x8GB

▲ 500 ▼

Release date ≈ Q2 2019.

Average Bench: 78.3% (78th of 132)

Based on 767 user benchmarks.  Model: Corsair CM4X8GF2666Z16K2 2x8GB
Poor: 54%Average: 78.3% Great: 95%

Popular builds with this RAM

Good average bench

The Corsair CM4X8GF2666Z16K2 2x8GB averaged 21.7% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Corsair CM4X8GF2666Z16K2 2x8GB near the top of the comparison list.

Strengths

Avg. 16 Core Read Bench 31.6GB/s
Avg. 16 Core Write Bench 26.5GB/s

Average consistency

The range of scores (95th - 5th percentile) for the Corsair CM4X8GF2666Z16K2 2x8GB is 40.5%. This is a relatively wide range which indicates that the Corsair CM4X8GF2666Z16K2 2x8GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Physical RAM Latency 82.4ns
Avg. 1 Core Read Bench 19.5GB/s

Average Bench

(Based on 767 samples)
Rank 7878.3%
Min Avg Max
19.9 MC Read 31.6 38.5
17.5 MC Write 26.5 35.4
17.7 MC Mixed 26.4 32.4
80.5% 28.2 GB/s
Min Avg Max
13.9 SC Read 19.5 24.5
16.6 SC Write 23.9 36.4
16.6 SC Mixed 25.3 30.5
65.5% 22.9 GB/s
Min Avg Max
58.7 Latency 82.4 108
48.6% 82.4 ns
User Benchmarks BenchMulti coreSingle coreLatency
The fastest RAM (mainstream) averages a speed of 100%
2 of 4 slots used
16GB DIMM DDR4 2666 MHz clocked @ 2667 MHz
89.5% Excellent
MC Read 36.4
MC Write 31.4
MC Mixed 30.1
93% 32.6 GB/s
SC Read 23.2
SC Write 29.8
SC Mixed 25
74% 26 GB/s
Latency 83.5
48% 83.5 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
88.2% Excellent
MC Read 36.9
MC Write 31.9
MC Mixed 28.9
93% 32.6 GB/s
SC Read 22.7
SC Write 19.4
SC Mixed 28.9
68% 23.7 GB/s
Latency 83.1
48% 83.1 ns
2 of 2 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
88.2% Excellent
MC Read 34
MC Write 34.8
MC Mixed 25.2
90% 31.3 GB/s
SC Read 18.1
SC Write 35.9
SC Mixed 25.5
76% 26.5 GB/s
Latency 60.7
66% 60.7 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
87.4% Excellent
MC Read 33.4
MC Write 35.1
MC Mixed 23.8
88% 30.8 GB/s
SC Read 18.2
SC Write 36.3
SC Mixed 26.5
77% 27 GB/s
Latency 57.9
69% 57.9 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
74.9% Very good
MC Read 30.8
MC Write 19.9
MC Mixed 29.6
76% 26.8 GB/s
SC Read 21.9
SC Write 19.4
SC Mixed 28.4
66% 23.2 GB/s
Latency 85.8
47% 85.8 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
74.1% Very good
MC Read 29.7
MC Write 20.1
MC Mixed 29.3
75% 26.4 GB/s
SC Read 21.4
SC Write 19.7
SC Mixed 28.7
66% 23.3 GB/s
Latency 82.3
49% 82.3 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
71.3% Very good
MC Read 29.8
MC Write 19.6
MC Mixed 27
73% 25.5 GB/s
SC Read 21.1
SC Write 19
SC Mixed 26.8
64% 22.3 GB/s
Latency 90.5
44% 90.5 ns
767 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 68,322,357 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 CM4X8GF2666Z16K2 2x8GB Builds (Compare 24,370 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 78%
Battleship
Desktop
Desktop 87%
Aircraft carrier
Workstation
Workstation 73%
Battleship

Motherboard: Asus ROG STRIX B450-F GAMING - $135

CPU
Ryzen 5 3600AMD  $90Bench 83%, 1,072,639 samples5,218x
Ryzen 7 2700XAMD  $150Bench 76%, 159,077 samples3,293x
Ryzen 7 3700XAMD  $137Bench 86%, 635,419 samples3,091x
GPU
RTX 2060Nvidia  $140Bench 90%, 645,160 samples1,564x
RTX 2070S (Super)Nvidia  $387Bench 115%, 663,603 samples1,380x
RTX 3070Nvidia  $450Bench 148%, 619,642 samples1,370x
SSD
860 Evo 500GBSamsung  $77Bench 105%, 762,998 samples924x
970 Evo Plus NVMe PCIe M.2 1TBSamsung  $117Bench 310%, 455,997 samples818x
860 Evo 1TBSamsung  $140Bench 112%, 602,853 samples713x
RAM
CM4X8GF2666Z16K2 2x8GBCorsairBench 78%, 767 samples1x
EDIT WITH CUSTOM PC BUILDER Value: 110% - Outstanding Total price: $442

Popular CM4X8GF2666Z16K2 2x8GB compatible motherboards:

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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
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