TEST
YOUR RAM
ADD TO PC
BUILD

Corsair

CM4B8G2J3000K15K 2x8GB

▲ 500 ▼

Release date ≤ Q1 2016.

Average Bench: 88.6% (23rd of 115)

Based on 402 user benchmarks.  Model: Corsair CM4B8G2J3000K15K 2x8GB
Poor: 67%Average: 88.6% Great: 104%

Popular builds with this RAM

Very good average bench

The Corsair CM4B8G2J3000K15K 2x8GB averaged just 11.3% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Corsair CM4B8G2J3000K15K 2x8GB near the top of the comparison list.

Strengths

Avg. 1 Core Write Bench 34.4GB/s
Avg. 16 Core Write Bench 33.8GB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Corsair CM4B8G2J3000K15K 2x8GB is 36.2%. This is a relatively wide range which indicates that the Corsair CM4B8G2J3000K15K 2x8GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 1 Core Read Bench 19.2GB/s
Avg. Physical RAM Latency 62.7ns
ADVERTISEMENT

Average Bench

(Based on 402 samples)
Rank 2388.6%
Min Avg Max
24.2 MC Read 32.3 38.6
24.1 MC Write 33.8 40.4
22 MC Mixed 28.3 34.6
90% 31.5 GB/s
Min Avg Max
13.3 SC Read 19.2 23.3
20.6 SC Write 34.4 42.8
18.8 SC Mixed 26.5 31.8
76.3% 26.7 GB/s
Min Avg Max
51.4 Latency 62.7 86.5
63.8% 62.7 ns
User Benchmarks BenchMulti coreSingle coreLatency
The fastest RAM (mainstream) averages a speed of 100%
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2133 MHz
74.6% Very good
MC Read 27.8
MC Write 28.4
MC Mixed 22.7
75% 26.3 GB/s
SC Read 16.2
SC Write 28.8
SC Mixed 22.2
64% 22.4 GB/s
Latency 64.1
62% 64.1 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2133 MHz
73.7% Very good
MC Read 27
MC Write 27.8
MC Mixed 22.9
74% 25.9 GB/s
SC Read 17.7
SC Write 28.1
SC Mixed 23.1
66% 23 GB/s
Latency 68
59% 68 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2133 MHz
69.3% Good
MC Read 29.3
MC Write 16.1
MC Mixed 27.2
69% 24.2 GB/s
SC Read 25.8
SC Write 15.9
SC Mixed 28.4
67% 23.4 GB/s
Latency 83.1
48% 83.1 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 3600 MHz
68.7% Good
MC Read 26.1
MC Write 22.3
MC Mixed 21.2
66% 23.2 GB/s
SC Read 23.3
SC Write 24.9
SC Mixed 24.3
69% 24.2 GB/s
Latency 60.7
66% 60.7 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 3000 MHz
60.3% Good
MC Read 23.1
MC Write 18.9
MC Mixed 19.2
58% 20.4 GB/s
SC Read 19.1
SC Write 21.1
SC Mixed 21.6
59% 20.6 GB/s
Latency 67.1
60% 67.1 ns
402 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 67,001,456 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 CM4B8G2J3000K15K 2x8GB Builds (Compare 13,896 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 69%
Battle cruiser
Desktop
Desktop 87%
Aircraft carrier
Workstation
Workstation 59%
Gunboat

Motherboard: Asus Z170 PRO GAMING - $295

CPU
Core i7-6700KIntel  $180Bench 81%, 588,978 samples6,618x
Core i5-6600KIntel  $81Bench 72%, 342,244 samples3,671x
Core i7-6700Intel  $180Bench 72%, 282,363 samples1,044x
GPU
GTX 1070Nvidia  $132Bench 80%, 1,459,281 samples2,165x
GTX 1060-6GBNvidia  $117Bench 56%, 1,368,019 samples1,381x
GTX 1080Nvidia  $400Bench 102%, 1,082,454 samples1,247x
SSD
850 Evo 250GBSamsung  $100Bench 103%, 951,591 samples884x
850 Evo 500GBSamsung  $109Bench 112%, 695,664 samples786x
860 Evo 1TBSamsung  $129Bench 112%, 602,853 samples320x
RAM
CM4B8G2J3000K15K 2x8GBCorsairBench 89%, 402 samples1x
EDIT WITH CUSTOM PC BUILDER Value: 89% - Excellent Total price: $707

Popular CM4B8G2J3000K15K 2x8GB 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: 8 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 $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184Nvidia RTX 4070 $409Samsung 860 Evo 250GB $46
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair 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