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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 128 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 is a server-grade DDR5 Registered DIMM with ECC, designed for data-intensive platforms such as virtualization hosts and in-memory databases where 128GB of capacity per module maximizes memory density. Its registered signal architecture and ECC error correction ensure superior signal integrity and data reliability at 6400MT/s, while operating at a low 1.1V to improve power efficiency under sustained, mission-critical workloads.
1. High-density module maximizes memory slots for virtualized workloads, allowing more VMs per server without sacrificing performance.
2. DDR5 technology doubles burst length and bank groups, accelerating in-memory databases and real-time analytics.
3. Blazing-fast transfer speed ensures low-latency data movement between CPU and memory, essential for high-frequency trading and AI inference.
4. On-die error correction safeguards data integrity 24/7, preventing silent corruption in mission-critical enterprise applications.
5. Registering clock and command signals enhances signal integrity across fully populated server racks, maintaining rock-solid stability under continuous load.
Engineered for mission-critical servers, the M321RAJA0MB2-CCPWC is a 128GB DDR5-6400 Registered ECC DIMM that transforms how data centers handle demanding workloads. Its 128GB capacity is vital for virtualization clusters, enabling you to host significantly more virtual machines per physical host and reduce hardware sprawl without compromising performance. As a Registered DIMM, it employs a buffer to stabilize address and command signals, which ensures reliable operation even when all memory channels are fully populated—a critical requirement when expanding memory in large-scale deployments. The integrated ECC actively detects and corrects single-bit errors, protecting your in-memory databases like SAP HANA from silent data corruption that could lead to incorrect analytics or financial miscalculations. Moreover, the DDR5-6400 speed delivers 51.2 GB/s of bandwidth, accelerating real-time queries and transactional throughput so that your Redis or Memcached tiers respond instantaneously under peak loads. With a low 1.1V operating voltage, this module also contributes to improved energy efficiency, directly lowering cooling costs in dense rack environments. Every bit of data remains accurate, every transaction consistent, and your entire infrastructure scales with confidence.
General Virtualization
For a hypervisor hosting mixed workloads, populate at least 8 identical 128 GB RDIMMs across the memory channels to deliver 1 TB per socket while maintaining balanced performance. Given the registered ECC nature of this DDR5-6400 module, deploy one DIMM per channel initially to preserve rank homogeneity and avoid frequency down-clocking, then scale by adding a second DIMM per channel if density takes priority over peak bandwidth.
In-Memory Database
Latency-sensitive in-memory databases like Redis or SAP HANA require large, contiguous memory pools, making a 6- or 8-channel fully populated configuration with these 128 GB RDIMMs ideal. Configure mirroring or sparing in the BIOS to guarantee data integrity, and commit to populating all channels symmetrically so that the interleaved memory access pattern sustains the highest throughput under OLTP loads.
High Performance Computing
Memory-bandwidth-bound HPC simulations benefit from a 1-DPC (DIMM per channel) strategy using the full 6400 MT/s speed of these registered modules. For dual-socket nodes, install 8 modules per CPU to reach 1 TB per socket while keeping rank count low; this preserves the 1.1 V operating voltage advantage and minimizes thermal stress during sustained double-precision workloads.
Strictly validated with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3, and other servers.
Q: Can I mix this M321RAJA0MB2-CCPWC with other memory modules of different brands or speeds?
A: Mixing Registered DIMMs of different brands, speeds, or ranks is strongly discouraged in server environments. It may lead to instability, POST failures, or reduced reliability. Always populate with identical Samsung modules for validated performance.
Q: Is this memory compatible with my system?
A: This DDR5-6400 Registered ECC DIMM is designed for dual-socket servers based on Intel Xeon Scalable (Sapphire Rapids) or AMD EPYC 9004 series platforms. Verify your motherboard QVL and CPU support for 128GB RDIMMs at 6400 MT/s.
Q: What is the recommended DIMM population order for optimal performance?
A: For optimal performance, balance DIMMs symmetrically across memory channels and follow the server board's population guide. Typically, populate one DIMM per channel first, starting with the farthest slot from the CPU per channel.
Q: Does this module support overclocking or XMP profiles?
A: No. This is an enterprise-class Registered ECC DIMM adhering to JEDEC specifications. It does not support XMP or manual overclocking, as stable, error-corrected operation at 6400 MT/s is the priority.
Q: What warranty and typical failure rate can I expect?
A: This Samsung module includes a one-year warranty. Enterprise DDR5 RDIMMs feature extremely low AFR (annualized failure rate), typically under 0.5%, due to rigorous binning and stringent validation for continuous data center operation.