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Samsung 5600MBPS 64GB DDR5 PC5-44800 2rx4 ECC RDIMM M321R8GA0EB0-CWM Registered Cl46 SDRAM 288-Pin RAM Server

M321R8GA0EB0-CWM
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Brief Overview of M321R8GA0EB0-CWM

M321R8GA0EB0-CWM Samsung 5600MBPS 64GB DDR5 PC5-44800 2rx4 ECC RDIMM Registered Cl46 SDRAM 288-Pin Memory Module Server. New Sealed in Box (NIB) with 3 Years Warranty

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SKU/MPNM321R8GA0EB0-CWMAvailability✅ In StockProcessing TimeUsually ships same day ManufacturerSamsung Manufacturer WarrantyNone Product/Item ConditionNew Sealed in Box (NIB) ServerOrbit Replacement Warranty1 Year Warranty
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Description

Samsung M321R8GA0EB0-CWM 64GB DDR5 Registered Memory

The Samsung M321R8GA0EB0-CWM DDR5 registered memory module is engineered to meet the demanding requirements of data centers, enterprise servers, and mission-critical computing environments. Designed around next-generation DDR5 SDRAM architecture, this 64GB module delivers higher bandwidth, improved power efficiency, and enhanced reliability compared to previous memory generations. Its registered DIMM (RDIMM) design ensures stable signal integrity, making it suitable for multi-socket server platforms that operate under sustained workloads.

General Information

  • Brand: Samsung
  • Part Number: M321R8GA0EB0-CWM
  • Product Line: DDR5 RDIMM Server Memory

Technical Information

  • Capacity: 64GB (1 x 64GB)
  • Memory Type: DDR5 SDRAM
  • Bus Speed: PC5-44800 (DDR5-5600)
  • Voltage: 1.1V optimized for energy efficiency
  • ECC Support: Yes, error detection and correction included
  • CAS Latency: CL46
  • Rank Structure: 2Rx4
  • Processing: Registered DIMM for server compatibility

Main Highlights

  • 64GB single module capacity suitable for memory-intensive applications
  • DDR5 SDRAM architecture with PC5-44800 bus speed
  • Registered DIMM (RDIMM) technology for server compatibility
  • ECC (Error-Correcting Code) for superior data integrity
  • 5600Mbps transfer rate with CL46 latency
  • 2Rx4 rank configuration for improved memory channel efficiency
  • 288-pin RDIMM form factor built for enterprise systems

Ideal Use Cases Across Industries

  • Virtualized server environments and private clouds
  • Database servers and transaction-heavy applications
  • High-performance computing and analytics workloads
  • Enterprise storage and software-defined infrastructure
Summary of Key Technical Attributes
  • Memory Type: DDR5 SDRAM
  • Capacity: 64GB (1 x 64GB)
  • Speed Rating: DDR5-5600 / PC5-44800
  • Error Protection: ECC
  • Signal Type: Registered (RDIMM)
  • Latency: CL46
  • Rank Structure: 2Rx4

The Samsung DDR5 Memory Modules

Samsung is a global leader in semiconductor technology, recognized for its innovation and reliability. The M321R8GA0EB0-CWM DDR5 64GB module reflects Samsung’s commitment to delivering high-quality memory solutions tailored for enterprise and hyperscale computing environments. Choosing Samsung memory guarantees consistency, rigorous testing standards, and long-term reliability in demanding scenarios.

PC5-44800: The Bandwidth Benchmark

"PC5-44800" M321R8GA0EB0-CWM is the industry's standardized designation for DDR5-5600 modules. The "PC5" prefix identifies it as DDR5, while the "44800" refers to the peak transfer rate in megabytes per second (MB/s) per module. Calculated as (5600 million transfers/second * 8 bytes/transfer), this yields a theoretical peak bandwidth of 44.8 GB/s for a single module. In multi-channel server platforms (commonly 8-channel), aggregate system bandwidth can exceed 350 GB/s, dramatically accelerating data-intensive applications.

Error-Correcting Code (ECC) Memory

ECC memory includes extra bits (8 bits for every 64) to store an encrypted code. When data is written, the code is calculated and stored. Upon read, the code is recalculated and compared. ECC can detect and automatically correct single-bit errors and detect (but not correct) multi-bit errors. In a server running 24/7, where even a single memory error can cause a catastrophic crash or silent data corruption, ECC is indispensable for ensuring data accuracy and system reliability.

Registered DIMMs (RDIMMs) Enabling Higher Capacity

An RDIMM incorporates a register (or buffer) on the module for the command and address signals. This buffer reduces the electrical load on the server's memory controller, allowing it to support a greater number of memory modules per channel. This is essential for populating servers with large total memory capacities—think 1TB, 2TB, or more—which is a common requirement for in-memory databases (like SAP HANA), large-scale virtualization, and big data analytics platforms.

RDIMM vs. UDIMM and LRDIMM

Used in desktops and entry-level servers. Offers slightly lower latency but places a direct electrical load on the memory controller, severely limiting the number of modules that can be installed. Not suitable for high-capacity server configurations.

Firmware

As a first-party vendor, Samsung provides direct technical support for its memory components and works closely with major server OEMs (Dell, HPE, Lenovo, Super micro) to ensure seamless integration and timely firmware updates if required. Samsung server memory undergoes exhaustive testing procedures beyond standard industry qualifications. This includes extended temperature cycle testing, high-voltage stress testing, and compatibility testing across a wide range of server platforms. This results in modules built to endure the harsh, 24/7 operational environment of data centers.

Reliable ECC Registered Architecture

Reliability is a cornerstone of server memory design, and this Samsung M321R8GA0EB0-CWM DDR5 RDIMM excels in that area. It incorporates Error-Correcting Code (ECC) technology to automatically detect and correct single-bit memory errors. This helps prevent data corruption, system crashes, and unexpected downtime in enterprise environments.

Capacity: 64GB

With a single M321R8GA0EB0-CWM 64GB module, this DDR5 RDIMM provides ample capacity for memory-intensive tasks such as virtualization, in-memory databases, AI inference, and large-scale application hosting. The high density allows system architects to scale memory footprints efficiently while minimizing the number of physical modules required.

Compatibility 

This server memory is designed for compatibility with a wide range of enterprise-class systems, including those from industry leaders such as Dell, HPE, Lenovo, Cisco, and Super micro. Its registered design ensures that it integrates seamlessly with modern server motherboards supporting DDR5 architecture. The 288-pin configuration also ensures straightforward installation, reducing downtime when upgrading or expanding server infrastructure. The Samsung M321R8GA0EB0-CWM memory module is intended for use in compatible DDR5 server platforms that support registered ECC memory. It integrates seamlessly with enterprise-grade systems from leading server manufacturers, making it a reliable upgrade or replacement option for IT professionals.

Features
Manufacturer Warranty:
None
Product/Item Condition:
New Sealed in Box (NIB)
ServerOrbit Replacement Warranty:
1 Year Warranty
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