Samsung 256GB DDR5 RDIMM M321RBJA0M22-CLP

Brand: Samsung | Category: Memory (RAM)

SKU: SAM-M321RBJA0M22CLP | Part #: M321RBJA0M22-CLP | MPN: M321RBJA0M22-CLP

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A single server equipped with twelve of the Samsung 256GB DDR5 RDIMM M321RBJA0M22-CLP modules delivers a total memory capacity of 3.07 TB per node—a specification that defines the upper bound for high-memory workloads in modern data centre deployments. This quad-rank, registered DIMM architecture represents the practical ceiling for memory density in enterprise servers, enabling infrastructure architects to consolidate memory-intensive workloads without proliferating physical hardware across multiple machines. For organisations running large-scale analytics, real-time transactional processing, or in-memory databases, this capacity point translates directly into operational efficiency and reduced latency across distributed systems.

The M321RBJA0M22-CLP is engineered specifically for the registered DIMM (RDIMM) slot found in dual-socket and quad-socket enterprise platforms. Samsung's DDR5 technology operates at 6400 Mbps data transfer rate with 1.1 V module voltage, delivering the bandwidth required for CPU-to-memory communication in systems where throughput is as critical as capacity. The 256GB density leverages Samsung's 16 Gb DRAM dies in a quad-rank (4Rx4) configuration across 288 pins, meaning each module presents four independent rank selections to the memory controller. This architectural choice matters for infrastructure teams: more ranks per module allow better load distribution across the memory subsystem, reducing contention and improving sustained bandwidth delivery during peak application load. The on-die ECC and registered command/address buffering ensure data integrity and signal stability across the full temperature range (0°C to 85°C), critical in data centre environments where environmental controls are tight but thermal events can still occur.

Enterprise memory procurement—typically handled by storage architects, AI infrastructure teams, or senior systems administrators—centres on three non-negotiable requirements: capacity per module to maximise per-server density, error correction to protect long-running applications, and platform validation to guarantee compatibility with existing infrastructure. The Samsung 256GB DDR5 RDIMM M321RBJA0M22-CLP addresses all three. Data centre buyers selecting memory for high-performance computing clusters, machine learning training environments, or financial services platforms find that quad-rank registered DIMMs reduce the number of modules required to reach target memory capacity, which in turn simplifies firmware validation, reduces power delivery complexity, and lowers overall cooling demand per terabyte of installed memory. ECC protection is not optional in these deployments—silent data corruption in a model training run or a financial settlement batch can cascade into costly rework or worse—making the on-die ECC and registered buffering features essential to procurement specifications.

Samsung's reputation in enterprise DRAM rests on consistent manufacturing, validated compatibility across Intel Xeon and AMD EPYC platforms, and proven longevity in production data centres. The M321RBJA0M22-CLP carries that same design discipline: the 288-pin form factor and registered DIMM architecture conform to JEDEC standards, meaning qualification occurs not in isolation but as part of a broader ecosystem validation process. Organisations deploying this module alongside existing DDR5 infrastructure can be confident that signal integrity, thermal characteristics, and command/address timing have been verified across multiple motherboard implementations. The dual 32-bit sub-channel architecture inherent to this DRAM type means that the memory controller sees the module as two independent 32-bit pipes rather than a single 64-bit pipe, improving parallelism and reducing the chance that a single access pattern will saturate available bandwidth. For administrators managing upgrades to existing systems, this detail matters: it ensures that mixed configurations—where new Samsung modules replace or supplement older memory—behave predictably without introducing latency asymmetries.

Omnixon Global stocks the Samsung M321RBJA0M22-CLP as part of its core DDR5 RDIMM portfolio, serving data centre operators, AI infrastructure builders, and enterprise IT teams across the GCC, Asia, and Europe. If your organisation is evaluating memory upgrades for high-density server platforms, testing new configurations for AI workloads, or building out capacity for in-memory analytics environments, we invite you to request a formal quotation. Our team in Dubai can discuss configuration options, lead times, and logistics tailored to your deployment schedule and regional requirements.

Deployment & Qualification Profile

• Maximum per-server capacity: 3.07 TB (twelve modules per dual-socket node)
• Data rate and latency profile: 6400 Mbps DDR5 with on-die ECC and registered buffering for signal stability
• Quad-rank configuration (4Rx4) distributes memory load across four independent rank selections, reducing subsystem contention
• Dual 32-bit sub-channel architecture improves memory-controller parallelism and sustained throughput under mixed workloads
• Operating envelope: 0°C to 85°C standard range, validated for continuous operation in controlled data centre environments
• JEDEC compliance and platform validation across Intel Xeon and AMD EPYC ecosystems ensures predictable inter-generational upgrades