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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 |
| Column Access Strobe (CAS) | CL32 |
| Rank | Dual Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
Designed for enterprise servers, this 64GB DDR5-6400 RDIMM with ECC and registered signaling ensures data integrity in latency-sensitive workloads like in-memory databases and dense virtualization. Its dual-rank x4 organization delivers superior bandwidth efficiency at CL32, maximizing throughput for memory-intensive applications.
1. ECC silently corrects single-bit memory errors, preserving data integrity and minimizing costly downtime in transactional databases and virtualization clusters.
2. Registered signal buffering stabilizes high-density memory arrays, allowing servers to scale capacity reliably across many DIMMs without compromising command accuracy.
3. Dual rank x4 organization keeps memory interleaving efficient, saturating channels to sustain consistent throughput under heavy multi‑tenant workloads.
4. Generous module density expands a server’s memory footprint, directly increasing virtual machine density and accelerating in‑memory analytics.
5. High‑speed DDR5 transfer rates cut memory access latency for massive datasets, empowering real‑time risk modeling and AI hosting in enterprise data centers.
When deploying a dense virtualization cluster or running an in‑memory database, memory errors and downtime are not an option. The M321R8GA0PB2‑CCP is a 64 GB DDR5‑6400 Registered DIMM engineered precisely for these enterprise workloads, and its four defining characteristics translate directly into operational resilience. The 6400 MT/s speed with a tight CL32 latency ensures that latency‑sensitive applications like SAP HANA or large Redis caches can process transactions instantly, reducing query waits and improving user experience under heavy concurrent loads. Built‑in ECC corrects single‑bit errors and detects multi‑bit faults before they corrupt financial records or customer data — a silent bit‑flip in an accounting database could otherwise propagate unnoticed for weeks. The Registered buffer stabilises signal integrity when populating multiple DIMMs per channel, so a 2‑TB virtualization host running hundreds of VMs remains stable even as memory channels are fully loaded. Finally, the dual‑rank x4 organisation interleaves memory accesses and boosts effective bandwidth, which is critical when multiple virtual machines compete for memory resources simultaneously, preventing the “noisy neighbour” effect that starves critical services. Combined with a low 1.1 V operating voltage that trims power and cooling costs across a rack full of servers, this module turns raw specifications into tangible uptime, data accuracy, and predictable performance — exactly what data centres demand.
General Virtualization
For dense VM hosting, populate all memory channels symmetrically to maximize bandwidth and capacity. A dual-socket server with 16× 64 GB DDR5-6400 RDIMMs delivers 1 TB of ECC-protected RAM, comfortably supporting hundreds of general-purpose VMs. Use one DIMM per channel (1DPC) where possible to maintain the full 6400 MT/s speed, avoiding the clock-down triggered by 2DPC configurations.
In-Memory Database
Low latency and large working sets demand that every channel is occupied with a single dual-rank DIMM to preserve peak frequency. Deploy 8 or 16 identical 64 GB RDIMMs in a balanced 1DPC layout to saturate the memory controllers while holding the entire dataset in DRAM. The CAS 32 latency and high rank count deliver the consistent, low-latency access that real-time analytics and Redis clusters require.
High Performance Computing
Memory-bandwidth-bound HPC workloads benefit from filling all available channels with one 64 GB RDIMM each, exploiting the full DDR5-6400 throughput. For capacity-hungry simulations, a 2DPC arrangement can be acceptable if total RAM exceeds per-channel limits, but expect a slight speed downgrade. Always match DIMM part numbers exactly across the cluster to guarantee ECC integrity and uniform perform
Rigorously tested and validated for server compatibility with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3.
Q: Can I mix this M321R8GA0PB2-CCP with other memory modules of different brands or speeds?
A: Mixing brands or speeds is not recommended for RDIMMs. Disparate SPD profiles and signal timings can cause instability, boot failures, or reduced reliability in enterprise servers. Always use identical, validated kits.
Q: Is this memory compatible with my system?
A: This 64GB DDR5-6400 Registered ECC module is designed for modern server platforms such as Intel Xeon Scalable (Sapphire Rapids) or AMD EPYC (Genoa). Please verify your system’s QVL for RDIMM support.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate first DIMM in the farthest slot per channel for signal integrity, then fill sequentially. With this Dual Rank x4 module, balancing channels equally maximizes bandwidth and reduces latency. Consult your server manual.
Q: Does this module support overclocking or XMP profiles?
A: No. This is an enterprise RDIMM built to JEDEC DDR5-6400 standards, prioritizing stability and error correction (ECC). XMP and overclocking are unsupported, as they compromise 24/7 operational reliability.
Q: What warranty and typical failure rate can I expect?
A: This module includes a one-year warranty. Enterprise RDIMMs exhibit extremely low annualized failure rates, typically below 0.5%, due to rigorous binning and integrated ECC designed for constant, mission‑critical workloads.