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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 64GB DDR5-6400 Registered ECC DIMM is a server-class memory module engineered for enterprise platforms, optimally deployed in virtualization hosts, in-memory databases, and latency-sensitive workloads requiring uncompromised data integrity. The registered signal topology stabilizes command and address buses under high-density multi-DIMM configurations, while integrated ECC actively detects and corrects single-bit errors, ensuring mission-critical reliability at full 6400MT/s throughput.
1. 64GB capacity per module maximizes memory density in rack servers, allowing more virtual machines and containers to run simultaneously without scaling hardware overhead.
2. DDR5 technology doubles the burst length and bank groups, fueling the bandwidth-hungry in-memory databases and real-time analytics platforms that modern enterprises depend on.
3. 6400MT/s transfer speed shrinks the data access window, directly improving transaction throughput on latency-sensitive workloads like high-frequency trading or OLTP systems.
4. ECC actively corrects single-bit errors in real time, preserving long-running computational integrity in scientific simulations and preventing silent data corruption in storage servers.
5. Registered signal type buffers command and address lines, stabilizing multi-DIMM channels at full capacity so hyperscale deployments can scale memory without compromising signal integrity.
When you are operating a dense virtualization cluster or an in-memory database like SAP HANA, every bit of data integrity and every nanosecond of latency matters. The M321R8GA0PB2-CCPWF is engineered precisely for these unforgiving enterprise environments. As a registered DDR5-6400 DIMM operating at just 1.1V, its 64GB capacity lets you pack more virtual machines or larger dataset caches onto a single node, directly reducing server sprawl and licensing costs. The move to 6400 MT/s bandwidth ensures that your CPU keeps feeding through concurrent VM requests without stalling, which translates into noticeably faster application response under load. More critically, the on-die ECC corrects single-bit errors before they can silently corrupt transactional data in a financial database, protecting you from costly silent data corruption. Meanwhile, the registered clock driver buffers command and address signals, stabilizing the massive memory channels required when all eight DIMM slots are populated in a 2U rack server. This gives you absolute reliability during week-long database integrity checks or when driving thousands of simultaneous user connections. With this module, unpredictable downtime and data risk are replaced by deterministic, trustworthy performance at scale.
Server Memory Capacity Planning
This 64GB DDR5-6400 Registered ECC DIMM (1.1V) is purpose‑built for server‑class platforms. Below are configuration guidelines for key workloads.
General Virtualization
Populate all memory channels symmetrically to maximize bandwidth for dozens of VMs. A minimum of four identical modules (256 GB) in a balanced 4‑channel layout is ideal for moderate consolidation. Scale in multiples of 4 DIMMs per socket to avoid NUMA bottlenecks and use ECC to ensure VM stability.
In‑Memory Database
Large in‑memory datasets (e.g., Redis, SAP HANA) demand high capacity and fault resilience. Deploy eight or more modules (≥512 GB) per node, evenly distributed across all channels for uniform latency. Consider memory mirroring or sparing modes to protect against uncorrectable errors; populate DIMMs identically in each bank for consistent performance.
High‑Performance Computing
Maximize throughput by filling every memory channel—typically 8 or 12 DIMMs per socket—for peak bandwidth with large‑scale simulations. A fully balanced configuration (equal capacity per channel) prevents memory‑access asymmetry. For memory‑heavy HPC workloads, 512 GB to 1 TB using these 64 GB RDIMMs provides the necessary capacity while registered ECC guarantees computational integrity.
Rigorously tested, compatible with: Dell PowerEdge R7725, HPE DL385 Gen12, Lenovo SR665 V4.
Q: Can I mix this M321R8GA0PB2-CCPWF with other memory modules of different brands or speeds?
A: Mixing is strongly discouraged in servers. Identical modules ensure signal integrity and validated performance. Mismatched DIMMs often introduce instability, data errors, and increased system downtime. Always use uniform kits.
Q: Is this memory compatible with my system?
A: This DDR5-6400 Registered ECC DIMM is compatible with platforms supporting RDIMMs, such as Intel Xeon Scalable 4th/5th Gen and AMD EPYC 9004/9005 series. Verify your specific server board's QVL for full compatibility.
Q: What is the recommended DIMM population order for optimal performance?
A: Consult your server motherboard manual. Typically, populate identical DIMMs in corresponding slots per channel, beginning with the farthest slot from the CPU, to achieve balanced multi-channel configuration and minimize latency.
Q: Does this module support overclocking or XMP profiles?
A: No. As a server-grade Registered ECC DIMM, it strictly adheres to JEDEC DDR5-6400 specifications to guarantee data integrity and 24/7 operational stability. XMP and overclocking are not supported.
Q: What warranty and typical failure rate can I expect?
A: This module includes a 1-year warranty. Manufactured with premium components, it delivers a very low annualized failure rate (AFR), consistent with rigorous enterprise-class reliability standards.