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G.SKILL

F4-2666C DDR4 2x8GB

▲ 500 ▼

Release date ≈ Q1 2017.

Average Bench: 78.8% (60th of 115)

Based on 284 user benchmarks.  Model: G.SKILL F4-2666C 2x8GB
Poor: 49%Average: 78.8% Great: 94%

Popular builds with this RAM

Good average bench

The G.SKILL F4-2666C DDR4 2x8GB averaged 21.1% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the G.SKILL F4-2666C DDR4 2x8GB near the top of the comparison list.

Strengths

Avg. 16 Core Read Bench 31.5GB/s
Avg. 16 Core Write Bench 27.9GB/s

Average consistency

The range of scores (95th - 5th percentile) for the G.SKILL F4-2666C DDR4 2x8GB is 45.3%. This is a relatively wide range which indicates that the G.SKILL F4-2666C DDR4 2x8GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Physical RAM Latency 100ns
Avg. 1 Core Read Bench 18.8GB/s
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Average Bench

(Based on 284 samples)
Rank 6078.8%
Min Avg Max
18.3 MC Read 31.5 38
16.1 MC Write 27.9 34.4
14.2 MC Mixed 27.1 32.2
82.4% 28.8 GB/s
Min Avg Max
14.4 SC Read 18.8 22.1
15.4 SC Write 27.6 35.8
14.7 SC Mixed 22.1 26.5
65.3% 22.9 GB/s
Min Avg Max
88.5 Latency 100 110
39.8% 100 ns
User Benchmarks BenchMulti coreSingle coreLatency
The fastest RAM (mainstream) averages a speed of 100%
2 of 4 slots used
16GB DIMM DDR4 clocked @ 1067 MHz
78.1% Very good
MC Read 30.1
MC Write 28.9
MC Mixed 26.8
82% 28.6 GB/s
SC Read 18.9
SC Write 27.9
SC Mixed 22
66% 22.9 GB/s
Latency 110
36% 110 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2133 MHz
77% Very good
MC Read 30.1
MC Write 28.1
MC Mixed 26.2
80% 28.1 GB/s
SC Read 18.3
SC Write 27.7
SC Mixed 22.3
65% 22.8 GB/s
Latency 110
36% 110 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 1067 MHz
76.8% Very good
MC Read 30
MC Write 27.9
MC Mixed 26.1
80% 28 GB/s
SC Read 18.9
SC Write 28.1
SC Mixed 21.9
66% 23 GB/s
Latency 109
37% 109 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 1067 MHz
76% Very good
MC Read 29.6
MC Write 27.1
MC Mixed 26.9
80% 27.9 GB/s
SC Read 17.9
SC Write 27.4
SC Mixed 20.3
62% 21.9 GB/s
Latency 105
38% 105 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 1067 MHz
74.6% Very good
MC Read 29.5
MC Write 26.2
MC Mixed 26.1
78% 27.3 GB/s
SC Read 17.6
SC Write 27.5
SC Mixed 20.8
63% 22 GB/s
Latency 109
37% 109 ns
2 of 4 slots used
16GB DIMM DDR4 2133 MHz clocked @ 1067 MHz
73.6% Very good
MC Read 28.9
MC Write 25
MC Mixed 26.2
76% 26.7 GB/s
SC Read 18.5
SC Write 27.7
SC Mixed 21.5
64% 22.6 GB/s
Latency 110
36% 110 ns
2 of 2 slots used
16GB DIMM DDR4 2133 MHz clocked @ 1067 MHz
72.7% Very good
MC Read 28.9
MC Write 25.4
MC Mixed 26
76% 26.8 GB/s
SC Read 17.5
SC Write 21.6
SC Mixed 21.6
58% 20.2 GB/s
Latency 108
37% 108 ns
2 of 2 slots used
16GB DIMM DDR4 clocked @ 1067 MHz
70.9% Very good
MC Read 28.4
MC Write 24
MC Mixed 25.1
74% 25.8 GB/s
SC Read 17.7
SC Write 23.5
SC Mixed 20.6
59% 20.6 GB/s
Latency 105
38% 105 ns
284 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 67,007,262 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 2x8GB Builds (Compare 678 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 80%
Battleship
Workstation
Workstation 86%
Aircraft carrier

Motherboard: Gigabyte GA-AX370-Gaming 5 - $246

CPU
Ryzen 7 1700AMD  $195Bench 69%, 144,475 samples100x
Ryzen 7 1700XAMD  $225Bench 71%, 66,470 samples88x
Ryzen 7 1800XAMD  $60Bench 72%, 30,050 samples75x
GPU
GTX 1080-TiNvidia  $485Bench 124%, 840,268 samples70x
GTX 1080Nvidia  $400Bench 102%, 1,082,454 samples52x
GTX 1060-6GBNvidia  $117Bench 56%, 1,368,019 samples49x
SSD
970 Evo Plus NVMe PCIe M.2 1TBSamsung  $95Bench 310%, 455,997 samples27x
860 Evo 500GBSamsung  $80Bench 105%, 762,998 samples23x
970 Evo Plus NVMe PCIe M.2 500GBSamsung  $43Bench 276%, 367,854 samples17x
RAM
F4-2666C DDR4 2x8GBG.SKILLBench 79%, 284 samples1x
EDIT WITH CUSTOM PC BUILDER Value: 71% - Very good Total price: $1,021

Popular F4-2666C DDR4 2x8GB compatible motherboards:

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Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.

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Memory Kit Rankings (Price vs Performance) April 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
vs Corsair Vengeance LPX DDR4 3000 C15 2x8GB
vs G.SKILL Trident Z DDR4 3200 C14 4x16GB
vs G.SKILL Trident Z DDR4 3600 C16 2x8GB
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
vs G.SKILL Ripjaws 4 DDR4 2400 C14 8x16GB

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) $30Corsair 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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