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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 128 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 x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This 128GB DDR5-5600 RDIMM with ECC and registered signaling is engineered for enterprise servers and workstations running memory-intensive workloads such as virtualization, in-memory databases, and large-scale data analytics, where the dual-rank x4 organization enhances interleaving for higher sustained bandwidth. Its registered clock driver ensures stable signal integrity across high-density memory configurations, while ECC reliably corrects single-bit errors to safeguard critical data integrity in 24/7 operation.
1. 128GB capacity per module dramatically increases memory density, enabling hypervisors to pack more virtual machines onto a single physical host without resorting to costly scale-out.
2. ECC protection actively corrects single-bit memory errors, safeguarding transactional databases from silent data corruption and preventing unplanned server downtime.
3. Registered signal buffering stabilizes the command and address bus under full-slot population, letting you scale to multi-terabyte configurations while maintaining signal integrity across all DIMMs.
4. 5600MT/s speed unlocks over 44.8 GB/s of peak bandwidth per channel, shortening response times for large in-memory datasets and accelerating concurrent query throughput in analytics workloads.
5. Dual Rank x4 interleaves sequential memory accesses back-to-back, saturating the DDR5 channel to deliver predictable, jitter-free performance under heavily consolidated cloud-hosted services.
When you are managing a dense virtualization cluster or running an in-memory database like SAP HANA, the 128GB DDR5-5600 Registered DIMM M321RAJA0MB0-CWMJH transforms from a component into a reliability and performance backbone. Its ECC technology actively corrects single-bit memory errors in real time, which is critical because in a 128GB module the statistical probability of cosmic-ray-induced bit flips grows significantly—one uncorrected error can silently corrupt a financial transaction or crash dozens of virtual machines. The Registered signal buffer stabilizes that massive capacity by redriving address and command signals, allowing your server to populate all memory channels with confidence without signal integrity collapse. The Dual Rank x4 organization interleaves two independent sets of memory banks on the same stick, boosting bandwidth through parallel bank access and delivering meaningfully higher transactions per second in a Redis or Memcached instance where microseconds matter. At 5600MT/s, this RDIMM saturates modern server platforms with the throughput needed to keep CPU cores fed during simultaneous VM live migrations, all while operating at just 1.1V to help control thermal density across a fully populated 24-slot server. This is not just memory; it is the difference between a service-level breach and a perfectly stable rack.
General Virtualization
Begin with two or four 128GB RDIMMs per CPU (256–512GB) to support moderate VM density while keeping one DIMM per channel for balanced memory access. This approach leaves slots open for seamless scaling, and the Registered ECC guarantees data integrity across multi-tenant workloads.
In-Memory Database
Populate all available memory channels—typically eight or twelve modules per socket—to reach 1TB–1.5TB and maximize throughput. The dual-rank x4 design and 5600MT/s speed deliver the low-latency, high-bandwidth profile required for large real-time datasets, and full channel interleaving prevents bottlenecks under heavy transactional loads.
High-Performance Computing (HPC)
Install one 128GB RDIMM in every memory channel per node (often 8 or 12 modules) to achieve full interleaving and peak bandwidth. Tune the BIOS for the 5600MT/s frequency under maximum population, as the CL46 latency and Registered signaling provide the stability needed for tightly coupled parallel simulations and modelling.
Rigorously tested for server compatibility, compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3, and more.
Q: Can I mix this M321RAJA0MB0-CWMJH with other memory modules of different brands or speeds?
A: Mixing is strongly discouraged for server environments. Using different RDIMMs can force the memory controller to default to the lowest common speed and may compromise ECC integrity, leading to system instability.
Q: Is this memory compatible with my system?
A: This DDR5-5600 Registered ECC RDIMM is designed for modern server platforms such as 4th Gen Intel Xeon Scalable and AMD EPYC 9004 series. Please verify your motherboard's qualified vendor list (QVL) for RDIMM support.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical DIMMs per channel, filling the farthest slot from the CPU first. For dual-processor servers, balance memory across both sockets. Always consult your system's service manual for balanced, channel-interleaved configurations.
Q: Does this module support overclocking or XMP profiles?
A: No. As an enterprise-grade Registered ECC module, it operates exclusively at JEDEC standard DDR5-5600. Stability and data integrity take precedence over overclocking, so XMP profiles are not supported.
Q: What warranty and typical failure rate can I expect?
A: This module includes a 1-year warranty. Built with premium components and rigorous screening, enterprise DDR5 RDIMMs typically achieve an extremely low annualized failure rate (AFR) of well under one percent.