Samsung 128GB DDR4 LRDIMM - DDR4

Brand: Samsung | Category: Memory (RAM)

SKU: M386A8K43CM2-CVF | Part #: M386A8K43CM2-CVF | MPN: M386A8K43CM2-CVF

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The Samsung M386A8K43CM2-CVF represents the kind of memory module that infrastructure teams deploy when they need to scale capacity without sacrificing reliability or performance in mission-critical environments. This 128GB DDR4 LRDIMM is purpose-built for Intel Xeon Scalable processors and fits into systems that demand both high density and load-balanced memory channels. The load-reduced design—the LRDIMM architecture that defines this module—distributes the electrical load across a buffer chip, allowing data centre operators to populate more DIMMs per channel than traditional registered memory would permit. For infrastructure planners managing hyperscale deployments or enterprise systems running complex workloads, this Samsung part number M386A8K43CM2-CVF offers a straightforward path to 128GB per socket without the thermal or signal-integrity penalties that come with pushing unbuffered memory to its limits.

Samsung's DDR4-2933 specification (PC4-23400) on this module sits in the practical sweet spot for Xeon deployments. The octal-rank configuration (8Rx4) and load-reduced register architecture mean that this LRDIMM can coexist alongside seven other modules in a fully populated memory channel, something that would create signal degradation and timing violations with standard RDIMM designs. Operating at 1.2V with a CAS latency of CL21, the M386A8K43CM2-CVF delivers the kind of consistent performance that virtualization teams, database administrators, and AI infrastructure engineers expect from Samsung memory—not the fastest in absolute terms, but reliable across thermal ranges and workload patterns. The 288-pin form factor and standard RDIMM/LRDIMM height profile ensure compatibility across major OEM platforms, and JEDEC compliance means you're not locked into proprietary validation cycles. Data centre procurement teams appreciate that this Samsung module arrives with full ECC support built in, eliminating the single-bit errors that can silently corrupt data in long-running analytics or financial systems.

The error-correcting capability on the Samsung M386A8K43CM2-CVF is not an afterthought—it's fundamental to how this module behaves in production. ECC detection and correction happen transparently at the memory controller level, catching soft errors before they propagate to CPU caches or application memory. In environments where 128GB modules are being populated eight at a time across multiple sockets, the probability of encountering a correctable error over twelve to thirty-six months of operation is non-trivial. Infrastructure architects and storage engineers routinely specify ECC-enabled memory for this reason, and Samsung's implementation on this part number ensures that error events are logged and can be monitored through standard IPMI interfaces. Operating across a 0°C to 85°C range, the module handles ambient temperature swings common in data centre refresh cycles and colocation facilities across the Middle East and Asia without requiring active monitoring or derating calculations.

Deployment scenarios for the Samsung M386A8K43CM2-CVF span from mid-range virtualization clusters to large-scale database appliances and AI training infrastructure. A typical order pattern we see is from systems engineers standardizing on 512GB or 1TB memory per node—that translates to four or eight of these modules per socket, depending on the processor generation and channel population strategy. Organizations running SAP HANA, Oracle Database, or in-memory analytics platforms find this capacity point aligns well with workload scaling assumptions. The load-reduced design also makes thermal management more predictable; the register buffer absorbs much of the switching current that would otherwise be pulled directly from the memory planes, reducing localized hot spots and allowing tighter spacing in blade servers or dense 2U configurations. Samsung's quality record on enterprise LRDIMM products means that replacement rates track well below industry averages, and spare inventory requirements can be calculated with confidence across multi-year deployment cycles.

Omnixon Global stocks the Samsung M386A8K43CM2-CVF for immediate availability across our GCC hub and forward-deployed logistics in Asia. Whether your team is scaling a data centre in Dubai, expanding an AI lab in Singapore, or refreshing infrastructure in Europe, we hold inventory of this module and can support the OEM kitting and validation workflows that enterprise procurement demands. Contact our technical team with your memory density requirements and platform specifications—we'll ensure your order arrives pre-validated and tested against your system configuration.

Performance Specifications

• Capacity: 128GB per module with octal-rank (8Rx4) configuration supporting up to 1TB per memory channel in fully populated systems
• Speed: DDR4-2933 (PC4-23400) JEDEC standard with CAS latency of CL21 for predictable timing across Intel Xeon Scalable generations
• Error Correction: Full ECC support with transparent single-bit correction and multi-bit detection integrated at the memory controller
• Register Architecture: Load-reduced LRDIMM buffer isolates electrical load and enables eight-module channel populations without signal degradation
• Operating Envelope: 1.2V nominal voltage and 0°C to 85°C temperature range designed for both data centre air-cooling and high-ambient colocation environments
• Physical Form: 288-pin LRDIMM with standard height profile ensuring OEM-wide compatibility across blade, 2U, and 4U chassis designs
• Validation: JEDEC DDR4 compliance with Samsung enterprise qualification covering Xeon and POWER-based platforms