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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 64 GB |
| Memory Technology | DDR5 |
| Product Voltage | 1.1 V |
| RAM Speed | 5600 MHz |
| RAM Standard | DDR5-5600/PC5-44800 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL46 |
| Rank | Dual Rank |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This DDR5-5600 RDIMM with ECC and registered signal buffering is engineered for mission-critical server platforms, delivering uncompromising data integrity for virtualized environments, in-memory databases, and heavy multi-tenant workloads. The dual-rank configuration maximizes bank-level parallelism to sustain throughput under concurrent access, while the 1.1V operating voltage and CL46 timing strike a balance between energy efficiency and rock-solid signal stability at high clock speeds.
1. ECC: End-to-end error correction safeguards data integrity, essential for preventing silent data corruption in financial transactions or database operations.
2. Registered: The registered buffer reduces electrical load on the memory controller, enabling large-capacity configurations without compromising signal integrity in dense server racks.
3. Dual Rank: Dual-rank interleaving boosts effective bandwidth under concurrent access patterns, keeping multiple virtual machines responsive and improving throughput for heavy consolidation.
4. Memory Capacity: Generous capacity per module maximizes memory footprint per channel, allowing higher VM density and smoother in-memory processing for large-scale analytics.
5. RAM Speed: High transfer rate feeds data-hungry CPU cores, accelerating real-time data processing and reducing latency in memory-intensive cloud applications.
The M321R8GA0PB0-CWMCJ is a 64GB DDR5-5600 Registered DIMM engineered for modern servers where downtime and data corruption are unacceptable. Its ECC actively detects and corrects single-bit errors in real time—a vital safeguard for in-memory databases like Redis or SAP HANA, where a silent bit-flip can cascade into financial discrepancies or transactional integrity failures. The registered buffer decouples the memory controller from the heavy electrical load of 64GB modules, ensuring rock-solid signal stability when you fully populate every channel in a virtualized cluster running hundreds of VMs; without it, dense configurations risk random crashes and unexplained instability. Dual-rank organization maximizes bank-level parallelism, substantially boosting throughput for live migrations, container orchestration, and large-scale hypervisor workloads. Meanwhile, the 5600 MT/s speed delivers 44.8 GB/s per channel, slashing latency for real-time analytics. Together, these four attributes—error correction, registered buffering, dual-rank interleaving, and high bandwidth—translate directly into uncompromised data integrity, maximum virtualization density, and a lower total cost of ownership for your enterprise infrastructure.
Capacity Planning Guide for 64GB DDR5-5600 RDIMM (Registered ECC)
This 64GB DDR5-5600 RDIMM with ECC and dual-rank organization is engineered for servers. For optimal performance and reliability, plan module configurations around memory channel counts and workload demands.
General Virtualization
Virtualization hosts thrive on dense, reliable memory. Install at least one 64GB DIMM per memory channel (e.g., eight modules for an eight-channel platform) to deliver 512GB of balanced capacity, easily supporting 50+ moderate VMs. Populating all channels with identical dual-rank RDIMMs ensures consistent latency and prevents bottlenecks during live migration or bursty I/O, while ECC guards against data corruption.
In-Memory Database
In-memory databases (Redis, SAP HANA) require massive, contiguous memory pools and data integrity. Fully populate all channels with these registered ECC modules to achieve 512GB or 1TB per node—using 8 or 16 DIMMs in a symmetric layout. This dual-rank, 64GB density maximizes capacity per slot without compromising NUMA-awareness. The strong error correction is critical for persistent, high-throughput cache and dataset storage.
High-Performance Computing (HPC)
HPC workloads prize bandwidth and reliability. For sustained 5600MT/s speed, place one dual-rank 64GB RDIMM per channel, avoiding two-DIMM-per-channel drops. A balanced 8-module, 512GB configuration feeds simulation and rendering jobs with ample headroom. The registered interface and ECC maintain signal integrity during multi-week runs, while leaving expansion slots available for scaling to 1TB when future projects demand it.
Rigorously tested and compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3.
Q: Can I mix this M321R8GA0PB0-CWMCJ with other memory modules of different brands or speeds?
A: Mixing different brands or speeds is not recommended. For server stability, ensure identical part numbers across all channels to avoid compatibility issues and preserve data integrity.
Q: Is this memory compatible with my system?
A: This DDR5-5600 RDIMM is designed for servers using Intel Xeon Scalable 4th Gen or AMD EPYC 9004 series CPUs. Verify your motherboard supports 64GB Registered DIMMs at PC5-44800 speed.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server vendor's population guide. Typically, populate identical Dual Rank DIMMs in balanced configurations—one DIMM per channel first, then fill symmetrically to maintain memory interleaving and bandwidth.
Q: Does this module support overclocking or XMP profiles?
A: No. As a Registered ECC server module, it operates strictly at JEDEC standard DDR5-5600 CL46 for maximum reliability and data integrity, not intended for overclocking or enthusiast XMP profiles.
Q: What warranty and typical failure rate can I expect?
A: It comes with a 1-year warranty. The module is built with enterprise-grade components and strict qualification; typical annualized failure rate (AFR) is well below 0.5% under normal server conditions.