Samsung 64GB DDR5 RDIMM MDRR644QDBC2-3

Brand: Samsung | Category: Memory (RAM)

SKU: SAM-MDRR644QDBC23 | Part #: MDRR644QDBC2-3 | MPN: MDRR644QDBC2-3

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Samsung's MDRR644QDBC2-3 is a 64GB DDR5 registered DIMM built for infrastructure where latency and stability matter more than raw capacity. Operating at 1.1V with a CAS latency designed into the PC5-51200 standard, this module delivers the electrical efficiency and timing consistency that high-frequency trading platforms, real-time analytics engines, and in-memory databases demand. The on-die ECC combined with system-level error correction means your data centre doesn't lose transactions to bit flips, and the 2Rx4 rank configuration allows dense server builds without sacrificing performance. This is the module that storage architects and AI infrastructure teams specify when they need predictable sub-microsecond response times across hundreds of concurrent queries.

The MDRR644QDBC2-3 carries the registered DIMM architecture that enterprise deployments have trusted for two decades. That registered clock driver sits between the memory controller and the DRAM array, isolating signal integrity issues and letting you populate server slots without the electrical degradation you'd see in an unbuffered design. At 1.1V, Samsung has kept the power envelope tight—important in large-scale deployments where every watt per gigabyte compounds across 100+ node clusters. The 288-pin configuration and standard module height mean zero surprises during installation; this part fits into every major OEM platform without height conflicts or riser-card gymnastics. Infrastructure engineers at banks, telecom operators, and cloud service providers recognize the Samsung brand here because it has shipped in volume across three generations of x86 and ARM server architectures.

Where this module distinguishes itself is in the combination of capacity and ranked design. At 64GB per DIMM, a single slot holds what used to require four or five modules two generations ago. The 2Rx4 rank structure—two ranks, four banks per rank—spreads the electrical load and improves command bus utilization in multi-threaded workloads. DDR5 at 6400 Mbps moves 51.2 gigabytes per second per module, which matters when your application is pulling 100GB datasets into cache or training neural networks on gigabytes of vector embeddings per iteration. The standard operating window of 0°C to 85°C covers every production environment from air-cooled data centres to liquid-cooled GPU clusters; Samsung publishes these ratings conservatively, so you don't see field failures during summer peak loads or thermal-throttling incidents during maintenance windows.

The MDRR644QDBC2-3 is not the module you buy because you need memory cheaply. You buy it because a sysadmin has calculated that one module failure costs more than twenty modules to stock and replace. You buy it because your network engineer ran packet captures and found that latency jitter above 50 microseconds breaks your application's SLA. You buy it because your AI lab's training job completes an hour faster with registered DIMM stability than with unbuffered alternatives, and you run enough experiments per month that an hour saved per run adds up to real productivity. Samsung's quality control on this part number is documented; field return rates on DDR5 RDIMMs from this manufacturer track in the 0.1% to 0.2% range across deployed fleets, which is the only metric that matters in a 200-node installation.

Omnixon Global stocks the Samsung MDRR644QDBC2-3 and maintains it in our Dubai warehouse for GCC-based data centres, enterprise refresh cycles, and regional AI infrastructure build-outs. Whether you are upgrading a legacy memory complement, building out a new cluster, or sustaining a production fleet, we support technical specification validation, quantity RFQs, and direct integration with your procurement workflow. Contact our enterprise memory team to discuss platform compatibility, bulk pricing, and regional delivery across the UAE, Saudi Arabia, Kuwait, and into India and Southeast Asia.

Performance and Reliability Specifications

• 6400 Mbps data transfer rate (PC5-51200) with 1.1V operating voltage ensures predictable latency in latency-sensitive workloads and minimizes thermal variance across temperature ranges
• Dual-level error correction—on-die ECC plus system-level ECC—protects against single-bit and multi-bit failures, critical for databases and financial transaction processing
• 2Rx4 rank configuration optimizes command bus utilization and electrical load distribution across 64GB capacity in a single 288-pin DIMM slot
• Registered clock driver isolates memory controller signals and preserves signal integrity in high-density server builds with 8, 12, or 16 DIMM slots per processor
• Standard module height and industrial operating range (0°C to 85°C) guarantee compatibility across OEM platforms and production thermal environments without derating or throttling
• Samsung manufacturing heritage and field-proven reliability in multi-generation DDR5 deployments across banking, telecommunications, cloud, and HPC sectors