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G.SKILL

F4-2666C DDR4 2x16GB

▲ 500 ▼

Release date ≈ Q1 2017.

Average Bench: 70.2% (81st of 115)

Based on 15 user benchmarks.  Model: G.SKILL F4-2666C 2x16GB
Poor: 36%Average: 70.2% Great: 92%

Popular builds with this RAM

Good average bench

The G.SKILL F4-2666C DDR4 2x16GB averaged 29.8% 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 27.3GB/s
Avg. 1 Core Write Bench 26.5GB/s

Below average consistency

The range of scores (95th - 5th percentile) for the G.SKILL F4-2666C DDR4 2x16GB is 55.7%. This is a relatively wide range which indicates that the G.SKILL F4-2666C DDR4 2x16GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Physical RAM Latency 103ns
Avg. 1 Core Read Bench 18.6GB/s
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Average Bench

(Based on 15 samples)
Rank 8170.2%
Min Avg Max
12.1 MC Read 27.3 37.9
10.2 MC Write 24.7 34.3
9.4 MC Mixed 23.5 32.6
71.9% 25.2 GB/s
Min Avg Max
12.4 SC Read 18.6 23.2
10.7 SC Write 26.5 36.4
12.3 SC Mixed 21.6 26.9
63.5% 22.2 GB/s
Min Avg Max
91.3 Latency 103 113
38.7% 103 ns
User Benchmarks BenchMulti coreSingle coreLatency
The fastest RAM (mainstream) averages a speed of 100%
2 of 2 slots used
32GB DIMM DDR4 2667 MHz clocked @ 1333 MHz
95% Outstanding
MC Read 37.9
MC Write 34.3
MC Mixed 32.6
100% 34.9 GB/s
SC Read 21.2
SC Write 36.4
SC Mixed 26.9
80% 28.2 GB/s
Latency 103
39% 103 ns
2 of 4 slots used
32GB DIMM DDR4 2666 MHz clocked @ 1333 MHz
90.4% Outstanding
MC Read 35.5
MC Write 32.7
MC Mixed 30.9
94% 33 GB/s
SC Read 20.9
SC Write 36
SC Mixed 26.2
79% 27.7 GB/s
Latency 109
37% 109 ns
2 of 4 slots used
32GB DIMM DDR4 2133 MHz clocked @ 1333 MHz
86.4% Excellent
MC Read 34.4
MC Write 29.6
MC Mixed 30.5
90% 31.5 GB/s
SC Read 20.2
SC Write 31.8
SC Mixed 25.8
74% 25.9 GB/s
Latency 98.5
41% 98.5 ns
2 of 4 slots used
32GB DIMM DDR4 2133 MHz clocked @ 1067 MHz
72.3% Very good
MC Read 27.7
MC Write 25.7
MC Mixed 24.5
74% 26 GB/s
SC Read 18.9
SC Write 28.3
SC Mixed 22.3
66% 23.2 GB/s
Latency 108
37% 108 ns
2 of 4 slots used
32GB DIMM DDR4 2133 MHz clocked @ 1067 MHz
69.3% Good
MC Read 26.8
MC Write 22.9
MC Mixed 24.3
70% 24.7 GB/s
SC Read 19.4
SC Write 27.5
SC Mixed 21.4
65% 22.8 GB/s
Latency 104
38% 104 ns
2 of 4 slots used
32GB DIMM DDR4 2667 MHz clocked @ 1333 MHz
44.9% Average
MC Read 17.5
MC Write 13.9
MC Mixed 13.2
42% 14.9 GB/s
SC Read 17.2
SC Write 17.9
SC Mixed 18.6
51% 17.9 GB/s
Latency 105
38% 105 ns
15 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 67,102,425 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 F4-2666C DDR4 2x16GB Builds (Compare 4,297 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 44%
Speed boat
Desktop
Desktop 77%
Battleship
Workstation
Workstation 41%
Speed boat

Motherboard: Asus PRIME B350-PLUS - $92

CPU
Ryzen 5 1600AMD  $110Bench 70%, 392,253 samples976x
Ryzen 7 1700AMD  $195Bench 69%, 144,475 samples419x
Ryzen 5 1600XAMD  $125Bench 74%, 140,440 samples389x
GPU
GTX 1060-6GBNvidia  $117Bench 56%, 1,368,019 samples491x
GTX 1070Nvidia  $132Bench 80%, 1,459,281 samples304x
GTX 1050-TiNvidia  $59Bench 29%, 946,701 samples278x
SSD
860 Evo 500GBSamsung  $80Bench 105%, 762,998 samples154x
850 Evo 250GBSamsung  $100Bench 103%, 951,591 samples151x
850 Evo 500GBSamsung  $90Bench 112%, 695,664 samples88x
RAM
F4-2666C DDR4 2x16GBG.SKILLBench 70%, 15 samples1x
EDIT WITH CUSTOM PC BUILDER Value: 83% - Excellent Total price: $399

Popular F4-2666C DDR4 2x16GB 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) May 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]

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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 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.

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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $254Nvidia RTX 4060 $300Crucial MX500 250GB $39
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $163Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $31Corsair Vengeance LPX DDR4 3000 C15 2x8GB $37SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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