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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 64 GB |
| Memory Technology | DDR5 |
| Product Voltage | 1.1 V |
| RAM Speed | 6400 MHz |
| RAM Standard | DDR5-6400/PC5-51200 |
| Error Identifying | ECC |
| Signal Type | Registered |
| RAM Genre | DIMM |
This DDR5-6400 Registered DIMM with ECC is engineered for server platforms, delivering exceptional data integrity and stability for mission-critical workloads such as virtualization and in-memory databases. Its registered signal buffering combined with on-die ECC correction ensures reliable operation at high speeds, making it an optimal choice for dense memory configurations where uptime and accuracy are paramount.
1. 64GB capacity per module maximizes memory density in server nodes, enabling higher virtual machine consolidation for cost-efficient cloud hosting.
2. DDR5 technology elevates internal bandwidth through doubled bank groups, accelerating concurrent data streams in heavily containerized environments.
3. 6400 MT/s speed drives ultra-fast data retrieval, directly boosting throughput for latency-sensitive financial modeling and real-time transaction processing.
4. ECC protection proactively corrects memory errors, preserving long-term data integrity across always-on mission-critical database operations.
5. Registered signaling buffers command and address lanes, reliably scaling to large-capacity configurations without compromising system stability under heavy load.
The moment you move beyond a handful of virtual machines into a dense VMware cluster or deploy an in-memory database like SAP HANA, consumer-grade memory becomes a critical liability. The M321R8GA0PB2-CCPKC is engineered specifically for these enterprise scenarios, where its four defining characteristics directly protect your uptime and transaction integrity.
At its core, DDR5 technology delivers the massive bandwidth spike that modern multi-core Xeon processors demand, preventing memory controllers from stalling when dozens of VMs contend for resources simultaneously. The 64GB capacity per DIMM is your consolidation enabler: it lets a 1U server swallow entire workloads that used to require a 2U chassis, leaving headroom for peak-hour surges without swapping to slower NVMe storage. More crucially, its Registered signal type buffers the command and address lines, stabilizing the immense electrical load when you fully populate all memory channels. This directly eliminates the intermittent, hair-pulling boot failures that plague unbuffered implementations. Wrapping these layers of protection, on-die ECC actively corrects single-bit errors before they flip a financial transaction total or silently corrupt a Redis dataset during replication. In database and virtualization fabrics, this chip isn’t just about speed—it translates 6400MT/s into latency-free query responses and hardened data fidelity your SLAs depend upon.
General Virtualization
A single 64GB RDIMM establishes a solid foundation for moderate-density hosts. For typical dual-socket servers, a balanced 8-module configuration (one module per channel) delivers 512GB, comfortably hosting 25–40 light-to-medium VMs. Scale by populating all 16 DIMM slots with identical 64GB modules to reach 1TB, ensuring memory bandwidth symmetry across NUMA domains for consistent guest performance.
In-Memory Database
Maximize capacity to keep entire datasets in DRAM, so populate every available channel with this 64GB Registered ECC module. A 16-DIMM dual-socket platform yields 1TB, ideal for sizable Redis or Memcached instances and reducing swap latency. Prioritize identical modules to guarantee rank interleaving and prevent bottlenecks under heavy, transient key-value workloads.
High-Performance Computing (HPC)
Opt for full channel population with uniform 64GB RDIMMs to harness memory interleaving and peak bandwidth. For memory-bandwidth-bound simulations, one DIMM per channel (e.g., 8 modules per socket) sustains DDR5-6400 speeds critical for CFD or weather modeling. Avoid mixing capacities; use identical 64GB parts to maintain balanced access and prevent cluster-wide performance variance during tightly coupled MPI jobs.
Validated server memory: tested with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, and Lenovo ThinkSystem SR650 V3.
Q: Can I mix this M321R8GA0PB2-CCPKC with other memory modules of different brands or speeds?
A: Mixing ECC RDIMMs of different brands or speeds is strongly discouraged. It may cause signal integrity issues and system instability; always populate servers with identical modules to ensure reliability.
Q: Is this memory compatible with my system?
A: This DDR5-6400 ECC Registered DIMM is designed for server platforms supporting RDIMMs, such as 4th Gen Intel Xeon Scalable or AMD EPYC 9004 series. Please verify your motherboard QVL list.
Q: What is the recommended DIMM population order for optimal performance?
A: Refer to your server motherboard manual. Generally, balance channels per processor, populate identically labeled slots first, and ensure equal memory loading across all memory controllers for best throughput.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a server-grade Registered DIMM running at JEDEC standard DDR5-6400. It does not support XMP profiles or manual overclocking, prioritizing stability and data integrity.
Q: What warranty and typical failure rate can I expect?
A: It includes a one-year warranty. Typical failure rates for enterprise RDIMMs are very low, with an Annualized Failure Rate (AFR) usually under 0.2%, depending on environmental conditions.