Upgrade your desktop system with the Crucial 8GB 1Rx8 DDR4-2666V-U PC4-21300 UDIMM Non-ECC Memory CT8G4DFS8266-M8F, a dependable DDR4 memory module designed to improve overall system responsiveness, multitasking efficiency, and everyday computing performance. Manufactured by Crucial, a trusted Micron brand, this module delivers reliable operation and broad compatibility with DDR4-enabled desktop platforms.
Featuring an 8GB capacity, 2666 MT/s transfer rate, and efficient 1.2V power consumption, this memory module is ideal for business desktops, home computers, student workstations, and custom-built PCs. Built to JEDEC specifications, it offers stable performance and automatic downclocking support for compatible motherboards that operate at lower DDR4 frequencies.
Key Features
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8GB DDR4 Capacity – Increases system memory for smoother multitasking and application performance.
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DDR4-2666 Speed – Delivers fast data transfer rates up to 2666 MT/s.
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PC4-21300 Bandwidth – Provides up to 21.3 GB/s theoretical memory bandwidth.
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Single Rank 1Rx8 Design – Optimized for desktop motherboard compatibility.
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Low Voltage Operation – 1.2V design helps reduce power consumption and heat generation.
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JEDEC-Compliant Timings – Standard CL19 timing profile ensures compatibility across supported platforms.
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288-Pin UDIMM Form Factor – Designed for standard DDR4 desktop systems.
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Trusted Crucial Quality – Built using premium Micron-engineered memory components.
Technical Specifications
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Manufacturer: Crucial (Micron)
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Part Number: CT8G4DFS8266-M8F
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SKU: CT8G4DFS8266-M8F
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Capacity: 8GB (1 x 8GB)
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Memory Type: DDR4 SDRAM
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Form Factor: 288-Pin UDIMM (Unbuffered DIMM)
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Speed: DDR4-2666V-U
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Data Transfer Rate: 2666 MT/s
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Bus Type: PC4-21300 / PC4-2666V
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Memory Bandwidth: Up to 21.3 GB/s
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CAS Latency: CL19 (19-19-19)
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Cycle Time: 0.75ns
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Rank Configuration: 1Rx8 (Single Rank)
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Chip Configuration: 8 FBGA 1Gx8 DRAM Chips
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Error Correction: Non-ECC
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Signal Processing: Unbuffered
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Operating Voltage: 1.2V
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Module Height: 31.25mm
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Heat Spreader: None (Standard Green PCB)
Compatible Alternative Part Numbers
- Crucial CT8G4DFS8266
- Crucial CT8G4DFS8266.C8FE
- Crucial CT8G4DFS8266.C8FD1
- Micron MTA8ATF1G64AZ-2G6E1
- Samsung M378A1K43CB2-CTD
- Samsung M378A1K43DB2-CTD
- SK Hynix HMA81GU6CJR8N-VK
- SK Hynix HMA81GU6AFR8N-VK
- Kingston KVR26N19S8/8
- Kingston KCP426NS8/8
Compatible Memory Modules
This memory can typically operate alongside other DDR4 UDIMM Non-ECC modules when supported by the motherboard:
- 4GB DDR4-2133 Non-ECC UDIMM
- 8GB DDR4-2133 Non-ECC UDIMM
- 8GB DDR4-2400 Non-ECC UDIMM
- 8GB DDR4-2666 Non-ECC UDIMM
- 16GB DDR4-2666 Non-ECC UDIMM
- 32GB DDR4-2666 Non-ECC UDIMM
- Micron DDR4 Desktop Memory Modules
- Crucial DDR4 UDIMM Modules
- Samsung DDR4 Desktop UDIMMs
- SK Hynix DDR4 Desktop UDIMMs
Desktop Platform Compatibility
- Intel DDR4 Desktop Motherboards
- AMD Ryzen DDR4 Desktop Platforms
- Home and Office Desktop PCs
- Business Workstations
- Educational and Student Systems
- Custom Gaming and Productivity Builds
- General-Purpose Computing Systems
Important Compatibility Information
- Designed exclusively for desktop systems using DDR4 UDIMM memory.
- Not compatible with laptops or systems requiring SO-DIMM memory.
- Not compatible with ECC Registered (RDIMM) or Load-Reduced (LRDIMM) server platforms.
- Supports automatic downclocking to 2400MHz or 2133MHz when required by the motherboard or CPU.
- Mixing memory modules of different speeds may result in operation at the speed of the slowest installed DIMM.
- Always verify motherboard memory specifications and maximum supported capacity before installation.
Ideal Applications
- Desktop Memory Upgrades
- Home and Office Computing
- Remote Workstations
- Educational PCs
- Business Productivity Systems
- Multitasking Environments
- Custom PC Builds
- Replacement Memory Projects
The Crucial 8GB 1Rx8 DDR4-2666V-U PC4-21300 UDIMM Non-ECC Memory CT8G4DFS8266-M8F combines dependable Micron-built quality, efficient DDR4 performance, and wide desktop compatibility. Whether you're upgrading an aging computer or building a new system, this memory module provides the performance and reliability needed for everyday productivity and smooth system operation.
