Samsung 16GB DDR5-4800 ECC RDIMM Server Memory M321R2GA3BB6-CQK

Brand: Samsung | Category: Memory (RAM)

SKU: M321R2GA3BB6-CQK | Part #: M321R2GA3BB6-CQK

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Product Overview

The Samsung 16GB DDR5-4800 ECC RDIMM (Registered Dual Inline Memory Module) represents a significant leap forward in enterprise server memory technology. As one of the world's leading memory manufacturers, Samsung has engineered this module to meet the rigorous demands of modern data centres, cloud service providers, high-performance computing environments, and enterprise IT infrastructure. Operating at a native speed of 4800 MT/s, this DDR5 module delivers nearly double the bandwidth of its DDR4 predecessors while introducing on-die ECC (Error Correction Code) at the chip level in addition to the traditional RDIMM ECC function — a critical advancement for mission-critical workloads where data integrity is non-negotiable.

Supplied in New Pulled condition, this module has been carefully extracted from OEM server systems and has seen minimal or no operational use. It represents an ideal procurement path for enterprise buyers seeking genuine Samsung quality at a commercially competitive price point. Each unit is functionally equivalent to a factory-new component and undergoes standard inspection processes prior to dispatch.

The DDR5 standard introduces a fundamentally redesigned memory architecture, shifting the voltage regulator from the motherboard to the DIMM itself via an on-module PMIC (Power Management Integrated Circuit). This reduces signal noise, improves power efficiency, and enhances signal integrity at high frequencies — all of which translate directly into improved system stability and sustained performance in 24/7 server environments.

Key Features & Benefits

• DDR5-4800 Speed: Operates at 4800 MT/s, delivering approximately 38.4 GB/s of peak memory bandwidth per module — a substantial uplift over DDR4-3200's 25.6 GB/s ceiling, enabling faster data throughput for memory-intensive applications.
• ECC Error Correction: Full RDIMM ECC support corrects single-bit errors and detects multi-bit errors in real time, ensuring data integrity and system uptime in mission-critical deployments such as financial transaction processing and healthcare record systems.
• On-Die ECC (ODECC): Samsung's DDR5 chips incorporate on-die error correction at the DRAM cell level, providing an additional layer of fault tolerance below the traditional ECC layer — significantly reducing uncorrectable error rates (UER) compared to DDR4.
• Registered (Buffered) Architecture: The RDIMM register chip offloads address and command signals from the memory controller, enabling higher DIMM counts per channel and greater total memory capacity in multi-socket server configurations.
• On-Module PMIC: The integrated Power Management IC delivers cleaner, more precise voltage regulation (1.1V nominal for DDR5 vs. 1.2V for DDR4), reducing power consumption by up to 20% compared to equivalent DDR4 configurations while improving signal integrity.
• Samsung Genuine Quality: Manufactured by Samsung Semiconductor, the world's largest DRAM producer, using advanced EUV (Extreme Ultraviolet Lithography) process nodes — ensuring consistent die quality, industry-leading yield rates, and long-term platform reliability.
• Industry-Standard Form Factor: Standard 288-pin DDR5 RDIMM form factor ensures broad compatibility across Intel Sapphire Rapids, Emerald Rapids, and AMD Genoa/Bergamo server platforms that support DDR5 memory channels.
• New Pulled Condition: Extracted from OEM server systems under controlled conditions, offering genuine Samsung provenance with outstanding value — ideal for budget-conscious enterprise procurement without compromising on component authenticity.

Technical Architecture

DDR5 represents the most architecturally significant DRAM generation transition in over a decade. Samsung's M321R2GA3BB6-CQK is built on a 288-pin PCB with two independent 32-bit sub-channels per DIMM (versus the single 64-bit channel of DDR4). This dual sub-channel design allows the memory controller to access each sub-channel independently, improving parallelism and effective bandwidth utilisation in scenarios where multiple threads access different memory regions simultaneously.

The module integrates a Registering Clock Driver (RCD), which is the defining component of an RDIMM. The RCD buffers command, address, and clock signals between the memory controller and the DRAM chips, electrically isolating the controller from the DRAM loads. This allows server platforms to populate more DIMMs per channel without degrading signal integrity — a critical capability for memory-dense server configurations running database or virtualisation workloads that require hundreds of gigabytes of addressable RAM.

Samsung manufactures the DRAM ICs on its advanced 1z nm or next-generation process node, applying EUV lithography to achieve tighter cell geometries, lower leakage current, and improved reliability characteristics. The on-module PMIC (Power Management Integrated Circuit) replaces the voltage regulator previously located on the server motherboard, resulting in cleaner power delivery, lower electromagnetic interference, and improved compatibility with tightly regulated server power delivery networks.

Performance & Capacity

At DDR5-4800, each module delivers a peak theoretical bandwidth of 38.4 GB/s. In a dual-channel configuration (two DIMMs per processor memory controller), aggregate bandwidth reaches approximately 76.8 GB/s per CPU socket. For multi-socket platforms such as dual Intel Xeon Sapphire Rapids systems with 8 memory channels per socket, total system memory bandwidth can exceed 300 GB/s — a transformative improvement for bandwidth-bound workloads such as in-memory analytics, machine learning inference, and large-scale database queries.

The 16GB capacity per module is suited to environments where memory density per slot is balanced against cost-per-gigabyte efficiency. In platforms supporting up to 16 DIMM slots per socket, a full population of 16GB DDR5 RDIMMs delivers 256GB per socket and 512GB in a dual-socket configuration — sufficient for most virtualisation hosts, mid-tier database servers, and AI inference nodes. The module's CAS latency and timing profiles are fully compliant with JEDEC DDR5 standards, ensuring plug-and-play compatibility with certified server platforms without requiring manual BIOS tuning.

Compatibility & Integration

The Samsung M321R2GA3BB6-CQK is designed to operate with server platforms built on Intel's 4th Generation Xeon Scalable (Sapphire Rapids) and 5th Generation Xeon Scalable (Emerald Rapids) processors, which were the first mainstream Intel server CPUs to natively support DDR5 memory channels. AMD EPYC 9004 Series (Genoa) and EPYC 9754/9654 (Bergamo/Siena) processors also natively support DDR5-4800, making this module compatible with a wide range of AMD-based server designs from OEMs including Dell, HPE, Lenovo, Supermicro, and others.

• Compatible with Intel Xeon Scalable 4th and 5th Generation (Sapphire Rapids, Emerald Rapids) platforms
• Compatible with AMD EPYC 9004 Series (Genoa, Bergamo, Siena) platforms
• Supported by major server OEMs: Dell PowerEdge (R760, R660, R960), HPE ProLiant Gen11 (DL380, DL360, DL560), Lenovo ThinkSystem SR650 V3, Supermicro H13 Series
• Compliant with JEDEC DDR5 SDRAM Standard (JESD79-5)
• JEDEC SPD (Serial Presence Detect) programmed for automatic platform detection and configuration
• Operates at 1.1V nominal supply voltage per DDR5 specification
• RoHS compliant and manufactured under ISO-certified quality management processes

Ideal Use Cases

The Samsung 16GB DDR5-4800 ECC RDIMM is an exceptionally versatile enterprise memory module suited to a wide range of demanding deployment scenarios:

• AI & Machine Learning Inference: DDR5's high bandwidth enables rapid data feeding to GPU and CPU-based inference engines, reducing latency in real-time AI applications such as natural language processing, recommendation systems, and computer vision pipelines.
• Virtualisation & Private Cloud: High memory bandwidth and capacity support dense virtual machine (VM) deployments on platforms such as VMware vSphere, Microsoft Hyper-V, and Proxmox, enabling more VMs per host and improved live migration performance.
• In-Memory Databases & OLAP: Applications such as SAP HANA, Oracle TimesTen, Redis, and MemSQL benefit directly from the increased bandwidth and capacity of DDR5, accelerating query response times and reducing latency for real-time analytics workloads.
• High-Performance Computing (HPC): Scientific simulation, computational fluid dynamics, genomics processing, and financial modelling all exhibit strong memory bandwidth sensitivity — DDR5-4800 delivers the throughput needed to keep modern multi-core Xeon and EPYC processors fully utilised.
• Enterprise Database Servers: Oracle Database, Microsoft SQL Server, and PostgreSQL deployments on physical or virtualised infrastructure benefit from the combination of ECC reliability and DDR5 bandwidth, particularly for large buffer pool operations and parallel query execution.
• Edge AI & Telco Infrastructure: Compact server deployments at network edge locations or within 5G infrastructure stacks require high-bandwidth, low-power memory — DDR5's improved power efficiency and performance density make it ideal for these constrained environments.
• Server Refresh & Capacity Expansion: Organisations upgrading existing DDR4-based server estates to next-generation DDR5 platforms can leverage New Pulled Samsung modules to achieve cost-effective memory population strategies without sacrificing reliability or brand integrity.

Why Buy from Omnixon

Omnixon Global is a trusted B2B IT hardware distributor headquartered in Dubai, UAE, with deep expertise in sourcing and supplying enterprise-grade memory, servers, storage, and networking components to clients across the GCC region and globally. Our procurement network enables us to source genuine Samsung memory modules — including New Pulled inventory — with full traceability and quality assurance. Enterprise IT teams, system integrators, cloud providers, and government agencies across Saudi Arabia, the UAE, Qatar, Kuwait, Bahrain, and Oman rely on Omnixon for rapid fulfilment of critical hardware requirements. Our Dubai-based team provides responsive pre-sales technical consultation to ensure memory compatibility with your specific server platforms, and our logistics capability supports urgent deployments across the region and internationally. When you source through Omnixon, you gain a partner with the technical knowledge and regional presence to support your infrastructure goals — from single-module orders to large-scale data centre memory refresh programmes.

Related Products & Ecosystem

Building a complete, high-performance server memory configuration often requires complementary hardware. Omnixon stocks a broad ecosystem of enterprise IT components that pair naturally with DDR5 server memory:

• Enterprise Servers: Dell PowerEdge, HPE ProLiant Gen11, Lenovo ThinkSystem, and Supermicro platforms purpose-built for DDR5 memory — available as complete systems or barebone configurations.
• Additional DDR5 Memory Modules: 32GB, 64GB, and 128GB DDR5 RDIMMs and LRDIMMs from Samsung, SK Hynix, and Micron for higher-density memory configurations.
• CPUs: Intel Xeon Scalable 4th/5th Gen and AMD EPYC 9004 Series processors compatible with DDR5 platforms.
• Enterprise SSDs: NVMe PCIe Gen 4/5 SSDs for storage tiers that complement high-bandwidth DDR5 memory subsystems in latency-sensitive workloads.
• Network Adapters & NICs: High-speed 25GbE, 100GbE, and 400GbE network interface cards to match the network throughput enabled by DDR5 memory bandwidth improvements.
• UPS & Power Protection: Enterprise UPS systems to safeguard DDR5-based server infrastructure against power anomalies that could compromise data integrity.