Samsung 32GB DDR5-6400 ECC RDIMM Server Memory M321R4GA0EB2-CCP

Brand: Samsung | Category: Memory (RAM)

SKU: M321R4GA0EB2-CCP | Part #: M321R4GA0EB2-CCP

Contact for Pricing — Request a Quote

Product Overview

The Samsung 32GB DDR5-6400 ECC RDIMM is a premium-grade, enterprise-class server memory module engineered to meet the demanding requirements of modern data centres, hyperscale cloud deployments, and high-performance computing environments. Operating at a blazing 6400 MT/s transfer rate, this Registered DIMM (RDIMM) leverages Samsung's industry-leading semiconductor fabrication to deliver exceptional bandwidth, reduced latency, and rock-solid reliability that enterprise IT teams depend on around the clock.

DDR5 represents the most significant leap in DRAM architecture in over a decade. Compared to its DDR4 predecessor, DDR5 doubles the burst length, introduces on-die ECC for improved signal integrity, and incorporates a new power management IC (PMIC) directly on the module itself — shifting voltage regulation closer to the DRAM cells and enabling greater power efficiency at higher frequencies. For organisations running memory-intensive workloads such as in-memory databases, virtualisation clusters, AI inference, and real-time analytics, this module represents a critical infrastructure upgrade that directly translates into measurable business performance gains.

Samsung, as the world's largest DRAM manufacturer, holds an unmatched position in the enterprise memory supply chain. The M321R4GA0EB2-CCP is a production-grade component manufactured to JEDEC DDR5 standards and validated across the major server OEM ecosystems. Enterprises across finance, healthcare, telecommunications, government, and cloud services rely on Samsung RDIMM modules as the memory backbone of their most mission-critical deployments.

Key Features & Benefits

• Ultra-High Speed at 6400 MT/s: Operating at DDR5-6400, this module delivers up to 51.2 GB/s of theoretical peak bandwidth per DIMM, enabling CPUs to feed data to compute cores without memory bottlenecks — critical for latency-sensitive enterprise applications.
• 32GB High-Density Capacity: A 32GB single-rank or dual-rank module per slot allows administrators to maximise total system memory capacity in platforms with limited DIMM slots, supporting memory configurations of up to 6TB+ in 96-slot platforms.
• ECC (Error-Correcting Code) Protection: Hardware-level error detection and single-bit correction ensures data integrity across continuous operations. ECC is mandatory for production server environments where silent data corruption could result in financial loss, data damage, or system downtime.
• RDIMM (Registered) Architecture: The registered buffer on the command and address bus reduces electrical loading on the memory controller, enabling higher DIMM counts per channel and greater overall system scalability compared to unbuffered (UDIMM) modules.
• On-Die ECC (ODECC): DDR5 introduces a secondary layer of ECC implemented at the individual DRAM die level, correcting errors before they propagate to the memory controller — providing an additional safety net for enterprise reliability.
• On-Module PMIC (Power Management IC): The integrated voltage regulator on the DIMM reduces motherboard power delivery complexity and enables tighter, more efficient power delivery to DRAM cells, lowering operational power consumption versus legacy DDR4 designs.
• JEDEC-Compliant & OEM Validated: Fully compliant with JEDEC DDR5 JEDEC JESD79-5 specifications and validated by leading server OEMs, ensuring seamless integration without compatibility risk in certified server platforms.
• Samsung Brand Reliability: Manufactured at Samsung's own fab facilities using the latest process nodes, ensuring lot-to-lot consistency, long production lifecycle availability, and proven field reliability in hyperscale deployments worldwide.

Technical Architecture

The M321R4GA0EB2-CCP is built on Samsung's advanced DDR5 DRAM die technology, packaged in the standard 288-pin RDIMM form factor (1.1V operating voltage). The module features a registered clock driver (RCD) that buffers command and address signals, decoupling the memory controller from the electrical load of the DRAM array. This architecture is essential in multi-DIMM-per-channel configurations where signal integrity would otherwise degrade at high speeds.

DDR5 introduces a fundamentally redesigned internal bus architecture compared to DDR4. Each DDR5 module contains two independent 32-bit sub-channels (plus ECC bits), effectively doubling the number of activation commands that can be processed per clock cycle. This sub-channel architecture improves memory access granularity and is particularly beneficial for workloads with mixed random and sequential access patterns, such as OLTP databases and virtualisation hypervisors.

The CAS Latency (CL) and timing parameters of DDR5-6400 are tuned to balance raw throughput with access latency. Samsung's proprietary die-stacking and packaging processes ensure that signal path lengths are minimised, contributing to tighter timing consistency across the full operating temperature range (0°C to 85°C). The module operates at 1.1V nominal, representing a significant reduction from DDR4's 1.2V, with direct benefits to thermal management in high-density server chassis.

Performance & Capacity

At DDR5-6400 speeds, each module delivers a theoretical peak bandwidth of approximately 51.2 GB/s. In a dual-channel platform with two DIMMs populated, the combined bandwidth approaches 102.4 GB/s — and on platforms supporting 8 or 12 memory channels (such as Intel Xeon Scalable 6th Gen or AMD EPYC Genoa), aggregate system memory bandwidth can exceed 600 GB/s, enabling CPUs to sustain peak computational throughput across demanding workloads.

The 32GB capacity per module enables enterprise-grade memory configurations while maintaining a practical cost-per-gigabyte profile. A two-socket server with 24 DIMM slots populated with 32GB modules delivers 768GB of total system memory — more than sufficient for large in-memory database instances, high-VM-density hypervisors, and HPC simulation workloads. For environments with extreme memory requirements, the RDIMM architecture supports scaling to 64GB, 128GB, and higher DIMM densities as capacity requirements grow.

Real-world benchmarks on 5th-generation Intel Xeon (Emerald Rapids) and AMD EPYC Genoa platforms demonstrate measurable improvements in database query throughput, machine learning data preprocessing speeds, and virtual machine consolidation ratios compared to DDR4-3200 platforms. Memory-bound workloads such as Redis, SAP HANA, and Oracle In-Memory Database show particularly strong gains from the increased bandwidth and improved sub-channel concurrency of DDR5.

Compatibility & Integration

The Samsung M321R4GA0EB2-CCP is designed and validated for use with current-generation server platforms that support DDR5 RDIMM memory. Compatibility spans the following ecosystems:

• Intel Xeon Scalable (5th Gen / 6th Gen — Emerald Rapids / Granite Rapids): Full support on Intel platforms with DDR5 memory controllers, including 1DPC and 2DPC configurations.
• AMD EPYC Genoa & Bergamo (9004 Series): Validated for AMD's Zen 4 and Zen 4c server platforms featuring 12-channel DDR5 memory subsystems.
• Major OEM Server Platforms: Compatible with Dell PowerEdge (7000 series), HPE ProLiant Gen11, Lenovo ThinkSystem V4, Supermicro X13 series, and other DDR5 RDIMM-certified server platforms.
• Operating System Agnostic: Functions transparently under all major server operating systems including VMware ESXi, Red Hat Enterprise Linux, Windows Server, Ubuntu Server, and container-based platforms (Kubernetes, Docker Swarm).
• JEDEC DDR5 Standard Compliance: Adheres to JEDEC JESD79-5 and SPD (Serial Presence Detect) specifications for plug-and-play compatibility with compliant memory controllers.
• RoHS Compliant: Meets the EU Restriction of Hazardous Substances directive, supporting environmental compliance requirements for enterprise procurement.

Ideal Use Cases

The Samsung 32GB DDR5-6400 ECC RDIMM is purpose-built for environments where memory performance, reliability, and density are non-negotiable. The following deployment scenarios represent the primary use cases for this module:

• AI & Machine Learning Inference Servers: Large language models and neural network inference workloads require massive, low-latency memory bandwidth to feed GPU and CPU compute engines. High-speed DDR5 memory reduces data staging bottlenecks between storage and compute, directly accelerating batch inference throughput.
• Virtualisation & VDI Infrastructure: Hypervisors running dense VM or VDI workloads (VMware vSphere, Microsoft Hyper-V, Nutanix AHV) benefit enormously from increased memory bandwidth and capacity, enabling higher VM-to-host consolidation ratios and smoother quality of service for end users.
• In-Memory Databases & Real-Time Analytics: Platforms such as SAP HANA, Redis, Apache Ignite, and Oracle TimesTen load entire working datasets into DRAM. DDR5-6400 bandwidth ensures these platforms can serve queries and transactions at maximum speed without memory subsystem throttling.
• High-Performance Computing (HPC) & Scientific Simulation: Computational fluid dynamics, finite element analysis, genomics sequencing, and climate modelling workloads are intrinsically memory-bandwidth-bound. Upgrading to DDR5-6400 RDIMMs provides a direct performance multiplier for these applications.
• Cloud & Hyperscale Data Centres: Public and private cloud operators building out new server racks benefit from DDR5's improved efficiency and density, reducing the total number of servers required to deliver equivalent memory capacity versus DDR4-based infrastructure.
• Financial Services & Algorithmic Trading Platforms: Low-latency memory access is critical for real-time risk calculation engines, order management systems, and market data processing platforms where microseconds matter and data integrity is paramount.
• Telecommunications & 5G Core Network Functions: Network function virtualisation (NFV) platforms and 5G core software stacks running on COTS servers require high memory bandwidth and strict ECC reliability to maintain carrier-grade availability standards.

Why Buy from Omnixon

Omnixon Global is a trusted B2B IT hardware distributor headquartered in Dubai, UAE, serving enterprise clients across the GCC region and internationally. We maintain localised inventory of premium Samsung memory modules including DDR5 RDIMMs, ensuring that enterprise IT teams, system integrators, and data centre operators across the UAE, Saudi Arabia, Qatar, Kuwait, Bahrain, and Oman can source critical hardware components without the delays and risks associated with cross-continental procurement. Our dedicated enterprise sales team brings deep technical knowledge of server memory compatibility, platform validation, and high-density deployment architectures — enabling us to provide consultative support beyond simple order fulfilment. All products sourced through Omnixon are brand new, authentic, and procured through authorised supply channels, giving procurement teams the confidence and compliance documentation they require for enterprise-grade deployments. Whether you are scaling out a new data centre, refreshing existing server infrastructure, or building an AI-ready compute cluster, Omnixon Global is your regional partner for Samsung DDR5 memory and the broader IT hardware ecosystem.

Related Products & Ecosystem

Building a complete, optimised server memory infrastructure requires more than individual DIMMs. Omnixon Global stocks a comprehensive range of complementary enterprise hardware categories to support your full deployment:

• Enterprise Servers: DDR5-ready rack servers and blade systems from Dell, HPE, Lenovo, and Supermicro that are validated for Samsung DDR5 RDIMM population.
• CPUs (Intel Xeon & AMD EPYC): Next-generation server processors with native DDR5 memory controller support to pair with this memory module for a validated platform configuration.
• Enterprise SSDs & NVMe Storage: High-speed NVMe SSDs to complement DDR5 memory performance in tiered storage and caching architectures.
• GPUs for AI & HPC: NVIDIA data centre GPUs for AI training and inference workloads where DDR5 system memory serves as the host-side data staging layer.
• Network Adapters & High-Speed NICs: 25GbE, 100GbE, and 400GbE network interface cards to ensure network I/O keeps pace with DDR5-accelerated compute performance.
• Server Racks & Enclosures: Enterprise rack infrastructure to house and manage DDR5-equipped server deployments efficiently and safely.
• UPS & Power Protection: Uninterruptible power supply systems to protect server memory and data integrity during power events.