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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 64 GB |
| Memory Technology | DDR5 |
| Product Voltage | 1.1 V |
| RAM Speed | 4800 MHz |
| RAM Standard | DDR5-4800/PC5-38400 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL46 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
Designed for enterprise servers, this 64GB DDR5-4800 RDIMM with ECC and registered signaling ensures data integrity and signal stability under heavy loads, making it ideal for memory-intensive workloads such as virtualization, in-memory databases, and large-scale data analytics. Its single-rank configuration and CL46 latency deliver a balanced profile of density and efficient access, enabling reliable scalability in multi-DIMM deployments without compromising throughput.
1. A 64GB capacity per module allows dense memory configurations, enabling virtualization hosts to consolidate more virtual machines without compromising performance due to memory overcommitment.
2. DDR5 technology provides higher per-core bandwidth, which accelerates parallel data processing in memory-intensive server workloads like large-scale in-memory databases.
3. 4800 MT/s data rate keeps server-class multi-core processors fed with data, reducing idle cycles and improving transaction throughput under sustained load.
4. ECC protection automatically corrects single-bit errors in real time, preventing silent data corruption in financial ledgers, scientific computations, and always-on databases.
5. Registered signal buffering stabilizes high-capacity memory banks across multi-socket servers, ensuring consistent uptime and signal integrity even when all DIMM slots are populated.
The Samsung M321R8GA0BB0-CQKRJ is a server-grade DDR5 Registered DIMM (RDIMM) with ECC, instantly revealing its purpose for mission-critical enterprise environments. Consider a dense virtualization cluster running dozens of VMs per node. Here, the 64 GB capacity per module translates directly to higher VM density without sacrificing performance, while the registered architecture buffers command and address signals, stabilizing the bus even when all slots are populated—preventing signal degradation that unregistered memory would suffer at scale. Meanwhile, the on-die ECC engine corrects single-bit errors in real time, a non-negotiable shield against silent data corruption that could otherwise flip a financial transaction or corrupt a database index. In an in-memory database like SAP HANA or Redis, the DDR5-4800 speed provides the 38.4 GB/s bandwidth needed to feed hungry multi-core CPUs, slashing query response times. The 1.1V operating voltage further reduces power consumption per bit, lowering thermal load in tightly packed server racks and cutting operational costs. This module is not just memory—it is the foundation of data integrity, system scalability, and always-on reliability that your users and revenue depend on.
Server Memory Capacity Planning Guide
This module is a 64GB DDR5-4800 ECC Registered RDIMM, engineered for enterprise servers. Below are recommendations for typical server workloads.
General Virtualization
For medium-density virtualization hosts, populate one DIMM per channel to balance cost and capacity. A dual-socket server with eight such 64GB modules provides 512GB, comfortably supporting 40–50 general-purpose VMs. Always install identical RDIMMs to maintain lockstep memory mode for enhanced data integrity.
In-Memory Database
In-memory databases like Redis or SAP HANA demand capacity and fault tolerance. Deploy a fully balanced configuration with at least eight 64GB RDIMMs (512GB) per host, leaving expansion room. Enable memory mirroring or rank sparing where uptime is critical; the ECC and register features here are essential to prevent silent data corruption under heavy write loads.
High-Performance Computing
HPC clusters benefit from maximum memory bandwidth per node. Populate all 12 or 16 DIMM slots with these 64GB RDIMMs in a balanced configuration to achieve 1.5–2TB per node, matching fat-node requirements. Paired with DDR5-4800, the registered design stabilizes signal integrity across fully loaded channels, sustaining memory-intensive parallel simulations efficiently.
Validated for server: rigorously tested with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3.
Q: Can I mix this M321R8GA0BB0-CQKRJ with other memory modules of different brands or speeds?
A: Mixing is not recommended for server environments. This RDIMM requires matched ranks, timings, and voltage. Mixing brands or speeds may cause instability, POST failures, and invalidate system validation.
Q: Is this memory compatible with my system?
A: This 64GB DDR5-4800 ECC RDIMM is designed for enterprise servers and workstations supporting Intel Xeon Scalable (Sapphire Rapids) or AMD EPYC 9004 series platforms with 288-pin DDR5 slots. Verify your motherboard’s QVL list.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow the platform’s manual: typically populate identical DIMMs per channel, starting with the farthest slot from the CPU. For dual-socket systems, balance memory across both processors to maximize interleaving and bandwidth.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a JEDEC-compliant registered server DIMM with fixed CL46 timings. It does not support XMP or overclocking; operational stability at standard 4800MT/s is ensured for mission-critical workloads.
Q: What warranty and typical failure rate can I expect?
A: This module includes a 1-year warranty. Enterprise DDR5 RDIMMs have an annualized failure rate (AFR) below 0.5% under specified conditions. Proper cooling and ESD handling further ensure long-term reliability.