Today's hottest
Amazon Ebay
deals
TEST
YOUR RAM
ADD TO PC
BUILD

G.SKILL F4-2666C19S-16GIS

Aegis DDR4 2666 C19 1x16GB

▲ 500 ▼

Release date ≈ Q4 2018.

Average Bench: 47.2% (118th of 132)

Based on 2,199 user benchmarks.  Model: G.SKILL F4-2666C19-16GIS 1x16GB
Poor: 37%Average: 47.2% Great: 54%

Popular builds with this RAM

Below average average bench

The G.SKILL Aegis DDR4 2666 C19 1x16GB averaged 52.7% 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 17.5GB/s
Avg. 1 Core Write Bench 16.7GB/s

Very good consistency

The range of scores (95th - 5th percentile) for the G.SKILL Aegis DDR4 2666 C19 1x16GB is just 16.5%. This is a relatively narrow range which indicates that the G.SKILL Aegis DDR4 2666 C19 1x16GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. 16 Core Mixed IO Bench 14.5GB/s
Avg. 1 Core Read Bench 15.4GB/s

Average Bench

(Based on 2,199 samples)
Rank 11847.2%
Min Avg Max
14 MC Read 17.5 19.7
11.9 MC Write 15.9 18.1
11 MC Mixed 14.5 17.5
45.5% 15.9 GB/s
Min Avg Max
9.22 SC Read 15.4 19.4
10 SC Write 16.7 19.8
10.1 SC Mixed 15.7 18.9
45.5% 15.9 GB/s
Min Avg Max
63.3 Latency 86.3 116
46.3% 86.3 ns
User Benchmarks BenchMulti coreSingle coreLatency
The fastest RAM (mainstream) averages a speed of 100%
1 of 4 slots used
16GB DIMM DDR4 clocked @ 3800 MHz
58.5% Above average
MC Read 22.8
MC Write 20.8
MC Mixed 17.2
58% 20.3 GB/s
SC Read 22
SC Write 18.7
SC Mixed 20.2
58% 20.3 GB/s
Latency 94.5
42% 94.5 ns
1 of 2 slots used
16GB DIMM DDR4 clocked @ 2667 MHz
51.4% Above average
MC Read 19.3
MC Write 17.7
MC Mixed 15.9
50% 17.6 GB/s
SC Read 17.8
SC Write 18.5
SC Mixed 16.9
51% 17.7 GB/s
Latency 93.9
43% 93.9 ns
1 of 2 slots used
16GB DIMM DDR4 clocked @ 2667 MHz
50% Average
MC Read 18.6
MC Write 16
MC Mixed 15.5
48% 16.7 GB/s
SC Read 19.1
SC Write 19.2
SC Mixed 18
54% 18.8 GB/s
Latency 88.9
45% 88.9 ns
1 of 2 slots used
16GB DIMM DDR4 clocked @ 2667 MHz
49.2% Average
MC Read 18.2
MC Write 15.5
MC Mixed 15.5
47% 16.4 GB/s
SC Read 19.1
SC Write 18.7
SC Mixed 17.5
53% 18.4 GB/s
Latency 88
46% 88 ns
1 of 4 slots used
16GB DIMM DDR4 clocked @ 2400 MHz
37.3% Below average
MC Read 13.9
MC Write 12.5
MC Mixed 11.2
36% 12.5 GB/s
SC Read 10.8
SC Write 10.5
SC Mixed 11.6
31% 11 GB/s
Latency 79
51% 79 ns
1 of 4 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
35% Below average
MC Read 15
MC Write 11.1
MC Mixed 10.2
35% 12.1 GB/s
SC Read 7.2
SC Write 7.7
SC Mixed 8.4
22% 7.77 GB/s
Latency 74.2
54% 74.2 ns
1 of 2 slots used
16GB DIMM DDR4 clocked @ 2133 MHz
34.9% Below average
MC Read 12.4
MC Write 13.3
MC Mixed 11
35% 12.2 GB/s
SC Read 6.9
SC Write 9.2
SC Mixed 8.4
23% 8.17 GB/s
Latency 87.7
46% 87.7 ns
1 of 4 slots used
16GB DIMM DDR4 clocked @ 2400 MHz
34.5% Below average
MC Read 13.5
MC Write 11.9
MC Mixed 10.1
34% 11.8 GB/s
SC Read 9.4
SC Write 10.6
SC Mixed 4.5
23% 8.17 GB/s
Latency 75.2
53% 75.2 ns
1 of 4 slots used
16GB DIMM DDR4 clocked @ 2400 MHz
24.2% Poor
MC Read 10.3
MC Write 7.1
MC Mixed 9.3
25% 8.9 GB/s
SC Read 5.5
SC Write 4.6
SC Mixed 6.7
16% 5.6 GB/s
Latency 201
20% 201 ns
2,199 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 68,317,365 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 Aegis DDR4 2666 C19 1x16GB Builds (Compare 12,614 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 25%
Raft
Desktop
Desktop 78%
Battleship
Workstation
Workstation 23%
Surfboard

Motherboard: Asus PRIME A320M-K - $72

CPU
Ryzen 5 2600AMD  $120Bench 73%, 179,588 samples1,519x
Ryzen 3 3200GAMD  $60Bench 63%, 104,122 samples1,364x
Ryzen 3 2200GAMD  $75Bench 60%, 181,631 samples1,034x
GPU
GTX 1050-TiNvidia  $59Bench 29%, 946,701 samples985x
RX 570AMD  $170Bench 45%, 473,685 samples775x
GTX 1650Nvidia  $150Bench 43%, 259,091 samples681x
SSD
A400 240GBKingston  $25Bench 66%, 424,288 samples737x
A400 480GBKingston  $35Bench 74%, 237,487 samples357x
Green 240GB (2018)WD  $51Bench 45%, 156,194 samples292x
RAM
Aegis DDR4 2666 C19 1x16GBG.SKILLBench 47%, 2,199 samples1x
EDIT WITH CUSTOM PC BUILDER Value: 91% - Outstanding Total price: $276

Popular Aegis DDR4 2666 C19 1x16GB compatible motherboards:

How Fast Is Your RAM? (Bench your build) Size up your PC in less than a minute

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.

UserBenchmark of the month

Gaming Desktop ProGaming

How it works

  • - Download and run UserBenchmark
  • - CPU tests include: integer, floating and string
  • - GPU tests include: six 3D game simulations
  • - Drive tests include: read, write, sustained write and mixed IO
  • - RAM tests include: single/multi core bandwidth and latency
  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
  • - Identify the strongest components in your PC
  • - See speed test results from other users
  • - Compare your components to the current market leaders
  • - Explore your best upgrade options with a virtual PC build
  • - Compare your in-game FPS to other users with your hardware
Memory Kit Rankings (Price vs Performance) November 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]

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.

 Comments

Added n/a ago.
Your
opinion?
▲Like ▼Dislike
Ready to retire
Age: 5 years

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 G.SKILL Trident Z DDR4 3600 C16 2x8GB
vs Corsair Vengeance LPX DDR4 2666 C16 2x8GB
vs G.SKILL Ripjaws 4 DDR4 2400 C14 8x16GB
vs Corsair Vengeance LPX DDR4 2133 C13 2x8GB
vs G.SKILL Trident Z DDR4 3200 C16 2x8GB

132 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.

 Frequently Asked Questions

Computer Components FAQ
What is the UBM value for money rating?
What is UBM Effective Speed?
Thunderbolt speed?
Are USB 3.0 cables different?
USB 3.0 vs 2.0 speed difference?
Why buy USB 3.0 today?
USB 3.0 / 4.0 release dates and max speeds?
Graphics Cards
How to force Optimus or Switchable discrete GPUs?
What are the UBM DX11 GPU tests?
What are the UBM DX10 GPU tests?
What are the UBM DX09 GPU tests?
What is the Splatting GPU benchmark?
What is the Gravity (NBody) GPU benchmark?
Memory Kits
What is the RAM value for money rating?
What is the effective RAM speed index?
What is the system memory latency ladder?
ALL FAQs »

 Best User Rated
Why does UserBenchmark have a bad reputation on reddit?
Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
Why don’t PC brands endorse UserBenchmark?
Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
Why don’t youtubers promote UserBenchmark?
We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
Why does UserBenchmark have negative trustpilot reviews?
The 200+ trustpilot reviews are mostly written by virgin marketing accounts. Real users don't give a monkey's about big brands.
Why is UserBenchmark the gold standard for users?
Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
CPUGPUSSD
Intel Core i5-12600K $165Nvidia RTX 4060 $290WD Black SN850X M.2 2TB $129
Intel Core i5-13600K $210Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $406
Today's hottest
Amazon Ebay
deals
If you buy something via a price link, UserBenchmark may earn a commission
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback