Boost the performance and reliability of your server infrastructure with the Samsung 16GB 1Rx4 DDR4-2666 PC4-21300 ECC Registered Memory M393A2K40DB2-CTD. Engineered for enterprise-class computing environments, this high-quality Samsung RDIMM module delivers dependable performance, data integrity, and system stability for virtualization, cloud computing, database management, and mission-critical business applications.
Designed with ECC Registered technology, this 16GB DDR4 memory module helps detect and correct memory errors before they impact system operation. Operating at 2666MHz with PC4-21300 bandwidth, the module provides an ideal balance of speed, efficiency, and reliability for modern server platforms.
Key Features
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16GB Capacity – Suitable for server upgrades, memory expansion, and replacement projects.
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DDR4-2666 Performance – Supports transfer rates up to 2666 MT/s.
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PC4-21300 Bandwidth – Delivers excellent throughput for enterprise workloads.
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ECC Registered Memory – Enhances data integrity and operational stability.
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Single Rank 1Rx4 Design – Optimized for server-grade performance and compatibility.
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Low Voltage Operation – Efficient 1.2V power consumption.
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Samsung Enterprise Quality – Built using premium Samsung DRAM technology.
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Server Optimized – Designed for demanding data center and enterprise environments.
Technical Specifications
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Manufacturer: Samsung
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Part Number: M393A2K40DB2-CTD
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SKU: M393A2K40DB2-CTD
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Capacity: 16GB (2G x 72)
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Memory Type: DDR4 SDRAM
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Form Factor: 288-Pin RDIMM (Registered DIMM)
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Speed: DDR4-2666 / PC4-21300
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Data Transfer Rate: 2666 MT/s
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CAS Latency: CL19
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Cycle Time: 0.75ns
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Rank Configuration: 1Rx4 (Single Rank)
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Chip Organization: (2G x 4) x 18 DRAM Devices
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Error Correction: Registered ECC
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Operating Voltage: 1.2V
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Application: Enterprise Servers and Data Center Systems
Compatible Alternative Part Numbers
The following memory modules offer similar specifications and may be suitable alternatives for supported server platforms:
- Samsung M393A2K40BB2-CTD
- Samsung M393A2K40CB2-CTD
- Samsung M393A2G40DB0-CPB
- SK Hynix HMA82GR7AFR4N-VK
- SK Hynix HMA82GR7CJR4N-VK
- Micron MTA18ASF2G72PDZ-2G6E1
- Micron MTA18ASF2G72AZ-2G6E1
- Kingston KSM26RD4/16HDI
- Dell SNP9RN2GC/16G
- HPE 815098-B21
Compatible Memory Modules
This module can typically be used alongside other DDR4 ECC Registered memory modules when supported by the host platform:
- 8GB DDR4-2666 ECC RDIMM
- 16GB DDR4-2666 ECC RDIMM
- 32GB DDR4-2666 ECC RDIMM
- 64GB DDR4 ECC LRDIMM
- DDR4-2400 ECC RDIMM Modules (speed may downclock)
- DDR4-2133 ECC RDIMM Modules (speed may downclock)
- Samsung DDR4 Registered ECC Memory
- SK Hynix DDR4 Registered ECC Memory
- Micron DDR4 Registered ECC Memory
- Kingston Server Premier DDR4 RDIMM Modules
Platform Compatibility
- HPE ProLiant Gen9 and Gen10 Servers
- Dell PowerEdge DDR4 Server Platforms
- Lenovo ThinkSystem Servers
- Cisco UCS Computing Systems
- Supermicro X10 and X11 Server Platforms
- Enterprise Storage Appliances
- Virtualization Hosts
- High-Density Data Center Deployments
Benefits of ECC Registered Memory
- Improves reliability by automatically correcting memory errors.
- Supports mission-critical workloads and high-availability environments.
- Provides stable operation in multi-DIMM server configurations.
- Reduces the likelihood of system crashes caused by memory faults.
- Designed for 24/7 enterprise and data center operation.
Important Compatibility Information
- Requires a server or workstation that supports DDR4 ECC Registered (RDIMM) memory.
- Not compatible with desktop systems utilizing standard UDIMM memory.
- Not compatible with laptop SO-DIMM slots.
- Cannot be mixed with non-ECC memory modules.
- Mixing different memory speeds may cause all installed modules to operate at the speed of the slowest module.
- Always verify server compatibility and memory population guidelines before installation.
Ideal Applications
- Enterprise Server Upgrades
- Virtualization and Hypervisor Platforms
- Cloud Infrastructure
- Database Servers
- Storage and Backup Systems
- Business-Critical Applications
- Data Center Expansion Projects
- High-Performance Computing Environments
The Samsung 16GB 1Rx4 DDR4-2666 PC4-21300 ECC Registered Memory M393A2K40DB2-CTD delivers enterprise-class reliability, ECC protection, and efficient DDR4 performance for modern server platforms. Whether you're expanding memory capacity or replacing existing modules, this Samsung RDIMM provides the stability and compatibility required for demanding enterprise workloads.
