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Crucial

CB8GU2666.C8ET 2x8GB

▲ 500 ▼

Release date ≈ Q3 2020.

Average Bench: 80.4% (58th of 115)

Based on 357 user benchmarks.  Model: Crucial CB8GU2666.C8ET 2x8GB
Poor: 62%Average: 80.4% Great: 91%

Popular builds with this RAM

Very good average bench

The Crucial CB8GU2666.C8ET 2x8GB averaged just 19.5% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Crucial CB8GU2666.C8ET 2x8GB near the top of the comparison list.

Strengths

Avg. 16 Core Read Bench 31.3GB/s
Avg. 1 Core Write Bench 31.2GB/s

Good consistency

The range of scores (95th - 5th percentile) for the Crucial CB8GU2666.C8ET 2x8GB is 28.6%. This is a relatively narrow range which indicates that the Crucial CB8GU2666.C8ET 2x8GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. 1 Core Read Bench 17.3GB/s
Avg. Physical RAM Latency 72.6ns
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Average Bench

(Based on 357 samples)
Rank 5880.4%
Min Avg Max
22.8 MC Read 31.3 36
20 MC Write 30.7 35.3
20.1 MC Mixed 24.1 30.3
82% 28.7 GB/s
Min Avg Max
13.1 SC Read 17.3 23.4
17.8 SC Write 31.2 37
15.6 SC Mixed 23.7 27.5
68.8% 24.1 GB/s
Min Avg Max
59.9 Latency 72.6 104
55.1% 72.6 ns
User Benchmarks BenchMulti coreSingle coreLatency
The fastest RAM (mainstream) averages a speed of 100%
2 of 2 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
89.8% Excellent
MC Read 35.4
MC Write 31.2
MC Mixed 32.2
94% 32.9 GB/s
SC Read 21
SC Write 35.8
SC Mixed 23.8
77% 26.9 GB/s
Latency 107
38% 107 ns
2 of 2 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
88.4% Excellent
MC Read 36.1
MC Write 34.3
MC Mixed 24.2
90% 31.5 GB/s
SC Read 22.6
SC Write 33.2
SC Mixed 26.7
79% 27.5 GB/s
Latency 70.1
57% 70.1 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2666 MHz
83.2% Excellent
MC Read 32.1
MC Write 32.6
MC Mixed 23.8
84% 29.5 GB/s
SC Read 16.8
SC Write 33.3
SC Mixed 25.6
72% 25.2 GB/s
Latency 63.6
63% 63.6 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2667 MHz
83.1% Excellent
MC Read 32
MC Write 33
MC Mixed 23.1
84% 29.4 GB/s
SC Read 17.2
SC Write 35.1
SC Mixed 25.5
74% 25.9 GB/s
Latency 65.9
61% 65.9 ns
2 of 4 slots used
16GB DIMM DDR4 clocked @ 2667 MHz
82.3% Excellent
MC Read 31.9
MC Write 32.1
MC Mixed 22.5
82% 28.8 GB/s
SC Read 18.2
SC Write 36.3
SC Mixed 25
76% 26.5 GB/s
Latency 64.3
62% 64.3 ns
2 of 2 slots used
16GB DIMM DDR4 2667 MHz clocked @ 2666 MHz
82.1% Excellent
MC Read 31.6
MC Write 32.2
MC Mixed 23.6
83% 29.1 GB/s
SC Read 17.2
SC Write 34.8
SC Mixed 25.9
74% 26 GB/s
Latency 72.9
55% 72.9 ns
2 of 2 slots used
16GB DIMM DDR4 2667 MHz clocked @ 2666 MHz
76.5% Very good
MC Read 30.7
MC Write 28
MC Mixed 23.7
78% 27.5 GB/s
SC Read 16.4
SC Write 28.7
SC Mixed 21.3
63% 22.1 GB/s
Latency 73.4
54% 73.4 ns
2 of 2 slots used
16GB DIMM DDR4 clocked @ 2667 MHz
50.5% Above average
MC Read 18.9
MC Write 17
MC Mixed 15.4
49% 17.1 GB/s
SC Read 18.6
SC Write 18.2
SC Mixed 15.9
50% 17.6 GB/s
Latency 83.8
48% 83.8 ns
2 of 2 slots used
16GB DIMM DDR4 clocked @ 2667 MHz
47.7% Average
MC Read 17.9
MC Write 14.9
MC Mixed 15.1
46% 16 GB/s
SC Read 18.1
SC Write 17.2
SC Mixed 16
49% 17.1 GB/s
Latency 84
48% 84 ns
357 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 67,004,935 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 CB8GU2666.C8ET 2x8GB Builds (Compare 5,717 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 87%
Aircraft carrier
Desktop
Desktop 87%
Aircraft carrier
Workstation
Workstation 79%
Battleship

Motherboard: Asus PRIME H510M-K

CPU
Core i5-10400FIntel  $99Bench 85%, 153,026 samples1,510x
Core i5-11400FIntel  $116Bench 94%, 46,609 samples831x
Core i3-10100FIntel  $70Bench 80%, 39,812 samples707x
GPU
RTX 3060Nvidia  $270Bench 100%, 447,556 samples615x
GTX 1650Nvidia  $155Bench 43%, 259,091 samples554x
UHD Graphics 630IntelBench 5%, 37,718 samples334x
SSD
A400 240GBKingston  $28Bench 66%, 424,288 samples287x
SNVS500G 500GBKingstonBench 186%, 34,043 samples202x
A400 480GBKingston  $36Bench 74%, 237,487 samples117x
RAM
CB8GU2666.C8ET 2x8GBCrucialBench 80%, 357 samples1x
EDIT WITH CUSTOM PC BUILDER Value: 89% - Excellent Total price: $397

Popular CB8GU2666.C8ET 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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  • - CPU tests include: integer, floating and string
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  • - 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
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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) $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
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