TEST
YOUR RAM
ADD TO PC
BUILD

Unknown

CMV8GX4M1A2666C18 Kingston KHX2666C16/8G 16GB

▲ 500 ▼

Release date ≈ Q2 2018.

Average Bench: 72.2% (76th of 115)

Based on 13 user benchmarks.  Model: Unknown CMV8GX4M1A2666C18 Kingston KHX2666C16/8G 16GB
Poor: 26%Average: 72.2% Great: 93%

Popular builds with this RAM

Good average bench

The Unknown CMV8GX4M1A2666C18 Kingston KHX2666C16/8G 16GB averaged 27.8% 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 27.4GB/s
Avg. 1 Core Write Bench 26.5GB/s

Poor consistency

The range of scores (95th - 5th percentile) for the Unknown CMV8GX4M1A2666C18 Kingston KHX2666C16/8G 16GB is 67.4%. This is a particularly wide range which indicates that the Unknown CMV8GX4M1A2666C18 Kingston KHX2666C16/8G 16GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Physical RAM Latency 114ns
Avg. 1 Core Read Bench 17.1GB/s
ADVERTISEMENT

Average Bench

(Based on 13 samples)
Rank 7672.2%
Min Avg Max
8.7 MC Read 27.4 36.7
9.4 MC Write 26.3 33
7.5 MC Mixed 24.3 36
74.3% 26 GB/s
Min Avg Max
4.6 SC Read 17.1 23.5
7.7 SC Write 26.5 40.6
6.3 SC Mixed 20.6 26.4
61.1% 21.4 GB/s
Min Avg Max
61.5 Latency 114 361
35.1% 114 ns
User Benchmarks BenchMulti coreSingle coreLatency
The fastest RAM (mainstream) averages a speed of 100%
3200, 3200 MHz
8192, 8192 MB
94% Outstanding
MC Read 34.7
MC Write 31.2
MC Mixed 36
97% 34 GB/s
SC Read 23.1
SC Write 40.6
SC Mixed 26.4
86% 30 GB/s
Latency 96.3
42% 96.3 ns
2666, 2666 MHz
8192, 8192 MB
92% Outstanding
MC Read 35.7
MC Write 35.6
MC Mixed 29.7
96% 33.7 GB/s
SC Read 22
SC Write 34.8
SC Mixed 25.4
78% 27.4 GB/s
Latency 98.4
41% 98.4 ns
2666, 2666 MHz
8192, 8192 MB
90.3% Outstanding
MC Read 36.7
MC Write 31.7
MC Mixed 30.6
94% 33 GB/s
SC Read 23.5
SC Write 29.9
SC Mixed 25.8
75% 26.4 GB/s
Latency 87.5
46% 87.5 ns
3200, 3200 MHz
8192, 8192 MB
88.3% Excellent
MC Read 33.6
MC Write 28.7
MC Mixed 33.8
92% 32 GB/s
SC Read 21.4
SC Write 36.2
SC Mixed 23.8
78% 27.1 GB/s
Latency 94.7
42% 94.7 ns
2400, 2400 MHz
8192, 8192 MB
72.4% Very good
MC Read 26.3
MC Write 30.4
MC Mixed 22.8
76% 26.5 GB/s
SC Read 11.7
SC Write 21.8
SC Mixed 19.5
50% 17.7 GB/s
Latency 69.7
57% 69.7 ns
2400, 2400 MHz
8192, 8192 MB
26% Poor
MC Read 9.8
MC Write 10
MC Mixed 8
26% 9.27 GB/s
SC Read 6.7
SC Write 9
SC Mixed 7.6
22% 7.77 GB/s
Latency 207
19% 207 ns
2400, 2400 MHz
8192, 8192 MB
23% Poor
MC Read 8.7
MC Write 9.4
MC Mixed 7.5
24% 8.53 GB/s
SC Read 4.6
SC Write 7.7
SC Mixed 6.3
18% 6.2 GB/s
Latency 361
11% 361 ns
13 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 67,010,054 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 CMV8GX4M1A2666C18 Kingston KHX2666C16/8G 16GB Builds (Compare 1,018 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 51%
Yacht
Desktop
Desktop 87%
Aircraft carrier
Workstation
Workstation 43%
Speed boat

Motherboard: MSI H310M PRO-M2 (MS-7B28)

CPU
Core i5-8400Intel  $131Bench 82%, 312,220 samples657x
Core i7-8700Intel  $200Bench 87%, 349,567 samples134x
Core i3-8100Intel  $110Bench 71%, 81,392 samples68x
GPU
GTX 1060-6GBNvidia  $117Bench 56%, 1,368,019 samples249x
GTX 1050-TiNvidia  $59Bench 29%, 946,701 samples190x
GTX 1060-3GBNvidia  $119Bench 52%, 627,793 samples74x
SSD
760p Series NVMe PCIe M.2 256GBIntel  $33Bench 190%, 20,095 samples55x
MZVLB256HAHQ-00000 256GBSamsungBench 190%, 13,215 samples46x
SD9SN8W128G 128GBSandiskBench 74%, 399 samples39x
RAM
CMV8GX4M1A2666C18 Kingston KHX2666C16/8G 16GBUnknownBench 72%, 13 samples1x
EDIT WITH CUSTOM PC BUILDER Value: 101% - Outstanding Total price: $281

Popular CMV8GX4M1A2666C18 Kingston KHX2666C16/8G 16GB 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) 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]

ADVERTISEMENT

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 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.

 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
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182Nvidia 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
If you make a purchase via one of these links, our site may earn a commission
Today's hottest
Amazon Ebay
deals
CPU GPU SSD HDD USB RAM MBD
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback