Corsair CM4X8GF2666Z16K4 8GB

Price and performance details for the Corsair CM4X8GF2666Z16K4 8GB can be found below. This is made using thousands of PerformanceTest benchmark results and is updated daily.

The graphs shows the relative performance of the ram module compared up to 9 other common ram modules of same type. For DDR3 and DDR4, the values will be from systems using newer Intel CPUs where available.
If pricing history data is available for the ram module, a chart with be created charting price changes.
The last graph shows up to the last 5 baselines we have received for this particular ram module. Both Intel and AMD results are shown.

Corsair CM4X8GF2666Z16K4 8GB

Description: PC4-21300, 1.2V, CAS Supported: 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Other names: Corsair CM4X8GF2666Z16K4

Memory First Benchmarked: 2020-10-13

Last Price Change: NA

Average Mark

2941
Samples: 32

Memory Test Suite Average Results for Corsair CM4X8GF2666Z16K4 8GB

Database Operations	4,696 KOps/Sec
Memory Read Cached	30,601 MBytes/Sec
Memory Read Uncached	16,491 MBytes/Sec
Memory Write	11,687 MBytes/Sec
Latency	37 ns (lower is better)
Memory Threaded	34,982 MBytes/Sec

From submitted results to PerformanceTest V10 as of 7th of October 2026.

Latency
As of 7th of October 2026 - Lower numbers represent better performance
Memory Model	Average
Corsair CMK16GX4M2B3200C16 8GB		41 ns
Team Group Inc. TEAMGROUP-UD4-3200 8GB		44 ns
Corsair CMK32GX4M2E3200C16 16GB		45 ns
Kingston KF3200C16D4/8GX 8GB		44 ns
Kingston KF3200C16D4/16GX 16GB		44 ns
G Skill Intl F4-3200C16-16GVK 16GB		42 ns
G Skill Intl F4-3200C16-8GVKB 8GB		42 ns
Corsair CMW16GX4M2C3200C16 8GB		41 ns
Team Group Inc. TEAMGROUP-UD4-3600 8GB		44 ns
Corsair CM4X8GF2666Z16K4 8GB		37 ns
PassMark Software © 2008-2026

Read Uncached Transfer Speed
As of 7th of October 2026 - Higher results represent better performance
Memory Model	Average
Corsair CMK16GX4M2B3200C16 8GB		18.9 GB/s
Team Group Inc. TEAMGROUP-UD4-3200 8GB		20.0 GB/s
Corsair CMK32GX4M2E3200C16 16GB		20.2 GB/s
Kingston KF3200C16D4/8GX 8GB		20.8 GB/s
Kingston KF3200C16D4/16GX 16GB		21.4 GB/s
G Skill Intl F4-3200C16-16GVK 16GB		19.9 GB/s
G Skill Intl F4-3200C16-8GVKB 8GB		19.2 GB/s
Corsair CMW16GX4M2C3200C16 8GB		19.2 GB/s
Team Group Inc. TEAMGROUP-UD4-3600 8GB		21.8 GB/s
Corsair CM4X8GF2666Z16K4 8GB		16.5 GB/s
PassMark Software © 2008-2026

Write Transfer Speed
As of 7th of October 2026 - Higher results represent better performance
Memory Model	Average
Corsair CMK16GX4M2B3200C16 8GB		12.7 GB/s
Team Group Inc. TEAMGROUP-UD4-3200 8GB		13.4 GB/s
Corsair CMK32GX4M2E3200C16 16GB		13.6 GB/s
Kingston KF3200C16D4/8GX 8GB		13.6 GB/s
Kingston KF3200C16D4/16GX 16GB		14.5 GB/s
G Skill Intl F4-3200C16-16GVK 16GB		14.0 GB/s
G Skill Intl F4-3200C16-8GVKB 8GB		12.6 GB/s
Corsair CMW16GX4M2C3200C16 8GB		13.1 GB/s
Team Group Inc. TEAMGROUP-UD4-3600 8GB		14.8 GB/s
Corsair CM4X8GF2666Z16K4 8GB		11.7 GB/s
PassMark Software © 2008-2026

Threaded Memory
As of 7th of October 2026 - Higher results represent better performance
Memory Model	Average
Corsair CMK16GX4M2B3200C16 8GB		37.3 GB/s
Team Group Inc. TEAMGROUP-UD4-3200 8GB		39.4 GB/s
Corsair CMK32GX4M2E3200C16 16GB		37.6 GB/s
Kingston KF3200C16D4/8GX 8GB		39.9 GB/s
Kingston KF3200C16D4/16GX 16GB		40.1 GB/s
G Skill Intl F4-3200C16-16GVK 16GB		38.4 GB/s
G Skill Intl F4-3200C16-8GVKB 8GB		37.7 GB/s
Corsair CMW16GX4M2C3200C16 8GB		37.5 GB/s
Team Group Inc. TEAMGROUP-UD4-3600 8GB		43.7 GB/s
Corsair CM4X8GF2666Z16K4 8GB		35.0 GB/s
PassMark Software © 2008-2026

Search for Corsair CM4X8GF2666Z16K4 8GB
from the Featured Merchants below:

Note: PassMark Software may earn compensation for sales from links on this site through affiliate programs.

Last 5 Baselines for Corsair CM4X8GF2666Z16K4 8GB
Most recent listed first
Baseline	Benchmark Results
BL3496087 - May 29 2026		31 ns - Latency 16.4 GB/s - Read Uncached 13.3 GB/s - Write 32.7 GB/s - Threaded
BL3355557 - Mar 17 2026		50 ns - Latency 12.9 GB/s - Read Uncached 9.3 GB/s - Write 35.0 GB/s - Threaded
BL2940514 - Sep 29 2025		29 ns - Latency 16.1 GB/s - Read Uncached 13.7 GB/s - Write 32.5 GB/s - Threaded
BL2852106 - Aug 21 2025		41 ns - Latency 18.4 GB/s - Read Uncached 10.3 GB/s - Write 33.8 GB/s - Threaded
BL2745279 - Jul 06 2025		30 ns - Latency 16.7 GB/s - Read Uncached 13.1 GB/s - Write 33.0 GB/s - Threaded
PassMark Software © 2008-2026

RAM Benchmarks

Memory Benchmarks

Corsair CM4X8GF2666Z16K4 8GB

Memory Test Suite Average Results for Corsair CM4X8GF2666Z16K4 8GB