Samsung 64GB DDR5-6400 ECC RDIMM Server Memory MDRR644QDBC2-3D000

Brand: Samsung | Category: Memory (RAM)

SKU: MDRR644QDBC2-3D000 | Part #: MDRR644QDBC2-3D000

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Product Overview

The Samsung 64GB DDR5-6400 ECC RDIMM (Registered Dual In-Line Memory Module) represents the cutting edge of enterprise server memory technology. Operating at a blazing 6400 MT/s data rate, this module is engineered for the most demanding compute workloads found in modern hyperscale data centres, enterprise server rooms, and high-performance computing clusters. As the world transitions to fifth-generation DDR architecture, this Samsung RDIMM delivers double the channel bandwidth of DDR4 while incorporating on-die ECC for enhanced data integrity at the silicon level — a critical requirement for mission-critical enterprise deployments.

Samsung, the global leader in DRAM manufacturing, brings decades of memory innovation to this module. The DDR5-6400 specification places this RDIMM at the high end of the DDR5 performance envelope, making it ideally suited for platforms based on Intel Xeon Scalable (Sapphire Rapids and Emerald Rapids) and AMD EPYC Genoa processors that natively support DDR5 memory channels. For enterprise IT procurement teams in the UAE, GCC, and broader MENA region seeking to future-proof their server infrastructure, this Samsung module offers an uncompromising combination of capacity, speed, and reliability.

Key Features & Benefits

• Ultra-High Bandwidth at DDR5-6400: Delivers up to 51.2 GB/s per module of theoretical peak bandwidth, enabling faster data movement across memory-intensive workloads such as in-memory databases, real-time analytics, and AI inference.
• 64GB High-Density Capacity: Each module provides 64 gigabytes of addressable memory, allowing servers with multiple DIMM slots to achieve multi-terabyte memory configurations essential for virtualisation hosts and large-scale database servers.
• ECC (Error-Correcting Code) Protection: Hardware-level error detection and correction prevents data corruption caused by soft errors, cosmic ray interference, and electrical noise — a mandatory feature for enterprise and financial computing environments.
• Registered (RDIMM) Buffer Architecture: The on-module register chip stabilises command and address signals, enabling higher DIMM counts per memory channel and significantly improving signal integrity at elevated speeds compared to unbuffered DIMMs.
• On-Die ECC (ODECC): DDR5 introduces on-die ECC at the DRAM cell level, adding a second layer of error correction beneath the system-level ECC — dramatically reducing uncorrectable error rates in high-density configurations.
• Lower Operating Voltage: DDR5 operates at 1.1V compared to DDR4's 1.2V, reducing per-module power consumption and contributing to lower TCO and improved PUE metrics in large-scale data centre deployments.
• Dual Subchannel Architecture: DDR5 splits the 64-bit channel into two independent 32-bit subchannels, improving memory access parallelism and reducing latency for workloads with mixed read/write patterns.
• Samsung Brand Reliability: Manufactured by Samsung Semiconductor, the world's largest DRAM producer, this module benefits from Samsung's advanced EUV lithography process nodes, offering industry-leading MTBF figures and consistent binning quality.

Technical Architecture

The DDR5-6400 RDIMM is built on Samsung's advanced DRAM fabrication process, utilising Extreme Ultraviolet (EUV) lithography to achieve tighter cell geometries, reduced leakage currents, and higher yield consistency. The module conforms to JEDEC DDR5 standards and incorporates a Register Control Device (RCD) — also known as a registering clock driver — that buffers the command, address, and clock signals between the memory controller and the individual DRAM components. This buffering reduces the electrical load seen by the host processor's memory controller, enabling stable operation across configurations with multiple DIMMs per channel.

Internally, the 64GB capacity is organised across multiple ranks and banks of DDR5 DRAM dies. The dual independent 32-bit subchannel design introduced with DDR5 allows the memory controller to issue separate commands to each subchannel simultaneously, effectively doubling command-level parallelism versus DDR4. Each subchannel has its own 8-bit ECC lane in addition to the on-die ECC at the DRAM level, providing a multi-layered approach to data integrity. The module uses a 288-pin edge connector compatible with DDR5 DIMM slots — physically and electrically incompatible with DDR4 slots, ensuring no accidental cross-generation installation.

Power management in DDR5 is partially migrated onto the DIMM itself via an onboard Power Management Integrated Circuit (PMIC). The PMIC converts the motherboard's 12V rail and regulates it to the precise voltages required by the DRAM and register components, improving power delivery stability and reducing noise on the voltage planes — a key contributor to signal integrity at 6400 MT/s data rates.

Performance & Capacity

At DDR5-6400, each module operates with a 6400 megatransfers per second data rate across its 64-bit wide (plus ECC) bus. The theoretical peak bandwidth per module is approximately 51.2 GB/s, representing a dramatic increase over the maximum DDR4-3200 bandwidth of 25.6 GB/s. In practice, quad-channel or octa-channel server platforms equipped with multiple 64GB DDR5-6400 RDIMMs can deliver aggregate memory bandwidth exceeding 400 GB/s — a level of throughput that fundamentally changes what is possible with in-memory computing, large language model inference, and real-time stream processing.

For virtualisation hosts running VMware vSphere, Microsoft Hyper-V, or KVM hypervisors, a dual-socket server populated with 16 of these 64GB modules achieves 1TB of total system memory, enabling the deployment of hundreds of virtual machines or memory-balloon-safe over-provisioned containers. For HPC applications and AI training frameworks such as PyTorch and TensorFlow, the higher bandwidth directly accelerates data loading from system memory into GPU HBM buffers, reducing GPU idle time and improving overall training throughput.

Compatibility & Integration

The Samsung DDR5-6400 ECC RDIMM is designed for server platforms with DDR5-capable memory controllers. Key compatibility considerations include:

• Intel Xeon Scalable (4th Gen — Sapphire Rapids & 5th Gen — Emerald Rapids): Native DDR5 support with up to 8 channels per socket; validated for use in Dell PowerEdge, HPE ProLiant Gen11, Lenovo ThinkSystem, and Supermicro platforms.
• AMD EPYC Genoa (9004 Series) and Bergamo: Supports DDR5 with up to 12 memory channels per socket, enabling massive aggregate bandwidth in 2P server configurations.
• JEDEC DDR5 Standard Compliance: Fully conforms to JEDEC JESD79-5 specifications, ensuring interoperability across all compliant server motherboards and memory controllers.
• RAS (Reliability, Availability, Serviceability) Features: Supports advanced RAS features including SDDC (Single Device Data Correction), post-package repair, and temperature sensor reporting via SPD hub — compatible with IPMI and BIOS-level memory health monitoring.
• SPD (Serial Presence Detect): Embedded SPD EEPROM communicates module timing, voltage, and configuration parameters to the host system BIOS/UEFI for automatic optimised configuration.

Ideal Use Cases

• AI & Machine Learning Training Infrastructure: High memory bandwidth accelerates data pre-processing pipelines and gradient computation phases in distributed deep learning clusters using NVIDIA H100, H200, or AMD Instinct MI300X GPUs.
• Large-Scale Server Virtualisation: Enables dense VM consolidation ratios on VMware vSphere, Proxmox, or Red Hat OpenShift platforms where per-socket memory capacity directly determines workload density.
• In-Memory Databases & OLAP Analytics: Powers SAP HANA, Oracle TimesTen, MemSQL, and similar in-memory database engines that require terabytes of low-latency, high-bandwidth memory to serve analytical queries in real time.
• HPC & Scientific Computing: Supports computational fluid dynamics, genomic sequencing, financial risk modelling, and climate simulation workloads that are fundamentally memory-bandwidth-bound.
• Enterprise Cloud Infrastructure: Ideal for private cloud and hybrid cloud nodes running OpenStack or VMware Cloud Foundation, where memory capacity and reliability directly affect SLA compliance.
• Real-Time Streaming & Big Data: Accelerates Apache Kafka, Apache Spark, and Flink deployments where large working datasets must reside in system memory to meet sub-millisecond latency SLAs.
• EDA & CAD Workstations: Supports memory-intensive electronic design automation tools and 3D CAD environments running on high-core-count workstation platforms with DDR5 memory support.

Why Buy from Omnixon

Omnixon Global is a trusted B2B IT hardware distributor headquartered in Dubai, UAE, serving enterprise clients across the GCC, MENA, and international markets. We maintain locally stocked inventory of critical server memory components including Samsung DDR5 RDIMMs, enabling rapid fulfilment for data centre build-outs, server upgrades, and emergency capacity expansions across the region. Our technical team brings deep expertise in enterprise memory qualification, helping clients validate compatibility with their specific server platforms and memory configurations before purchase. When you source Samsung DDR5-6400 ECC RDIMMs through Omnixon, you benefit from our established procurement relationships, rigorous authenticity verification, and dedicated enterprise account management — ensuring every module delivered meets Samsung's original manufacturing specifications. We proudly serve hyperscale operators, government entities, financial institutions, healthcare providers, and managed service providers throughout Saudi Arabia, the UAE, Qatar, Kuwait, Bahrain, Oman, and beyond.

Related Products & Ecosystem

To build a complete, optimised server memory infrastructure, consider pairing this Samsung DDR5-6400 RDIMM with complementary products available from Omnixon's extensive catalogue. Compatible enterprise servers from Dell, HPE, Lenovo, and Supermicro provide the DDR5-capable platforms that unlock the full performance potential of this module. High-performance CPUs including Intel Xeon Scalable 4th/5th Gen and AMD EPYC Genoa processors are designed to maximise DDR5 memory channel utilisation. For storage tiers beneath the memory layer, explore our range of Enterprise NVMe SSDs and Enterprise HDDs to create balanced compute-storage architectures. Network Adapters & NICs with high-speed 25GbE, 100GbE, or 200GbE connectivity ensure that memory bandwidth is matched by network throughput in distributed computing environments. Additionally, our portfolio of GPUs for AI and HPC acceleration, Server Racks & Enclosures, and UPS & Power Protection solutions help enterprise clients build end-to-end, production-ready infrastructure from a single trusted source.