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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 16 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) | CL40 |
| Rank | Single Rank x8 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This DDR5-4800 Registered DIMM with ECC is purpose-built for server platforms running virtualization, in-memory databases, and other mission-critical workloads where data integrity is non-negotiable. Its single-rank x8 configuration and registered signaling enhance signal stability and memory channel efficiency at 1.1V, while CL40 timing and on-die ECC scrub ensure reliable data delivery even under sustained heavy load.
1. A 16GB capacity per module enables higher memory density per server node, allowing more virtual machines or containers to be consolidated without sacrificing performance headroom.
2. DDR5 technology doubles the module bandwidth foundation, dramatically speeding up in-memory database queries and real-time data analytics in enterprise environments.
3. The 4800MT/s data rate ensures swift large-block transfers, minimizing latency dips when handling concurrent requests across multiple client sessions.
4. On-die ECC corrects single-bit errors silently, shielding critical workloads like financial ledgers or medical records from data corruption and unplanned downtime.
5. Registered signal buffering preserves clean command and address integrity even under fully loaded server configurations, stabilizing 24/7 operations at scale.
In high-density virtualization clusters, an uncorrected memory bit-flip can silently corrupt data across dozens of VMs, crashing services or invalidating financial transactions without a trace. The M321R2GA3BB6-CQKEG DDR5-4800 RDIMM directly confronts this risk with full ECC, continuously scrubbing single-bit errors and detecting multi-bit failures to enforce hardware-level data integrity your workloads cannot afford to lose. Its registered architecture buffers command and address signals, eliminating signal droop when populating large memory banks—indispensable for an in-memory database like SAP HANA or Redis, where a single fault can freeze real-time analytics. Operating at 4800MT/s with a single-rank x8 organization, the module leverages DDR5’s burst interleaving to deliver the low-latency, high-concurrency bandwidth that responsive query processing demands. The 1.1V supply further shrinks power consumption across racks, directly lowering cooling and operating costs. For 24/7 enterprise environments, this translates to predictable performance under heavy multi-tenant loads, fewer silent data corruptions, and the peace of mind that business-critical services remain stable, accurate, and always available.
Server Memory Identified – This is a DDR5-4800 Registered ECC RDIMM (16GB, single-rank, CL40, 1.1V), purpose-built for enterprise servers. Capacity planning must align with channel population rules and workload demands.
General Virtualization
For hypervisor hosts running 20–40 mixed VMs, populate all eight channels of a typical dual-socket platform with one DIMM per channel (8 × 16GB = 128GB total). This balanced configuration maximizes memory bandwidth while avoiding the latency penalty of dual-rank loading. Scale to two DIMMs per channel (256GB) if overcommit ratios exceed 150%.
In-Memory Database
Databases like Redis or SAP HANA demand both capacity and data integrity. Fully load all 16 DIMM slots per server (16 × 16GB = 256GB) using identical single-rank RDIMMs to leverage lockstep memory and full ECC scrubbing. Single-rank modules reduce bus loading, sustaining 4800MT/s speed under heavy small-I/O patterns critical for low-latency datasets.
High-Performance Computing
HPC workloads thrive on bandwidth. Use the minimum DIMM count per CPU to achieve the required capacity—for instance, 16 × 16GB (256GB) across 16 channels in a dual-socket node, one DIMM per channel. This 1DPC (DIMM per channel) strategy enables the highest native memory speed (4800MT/s) and symmetric NUMA access, essential for tightly coupled MPI jobs.
Compatibility validated: rigorously tested server memory for Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3.
Q: Can I mix this M321R2GA3BB6-CQKEG with other memory modules of different brands or speeds?
A: Mixing modules is not recommended for server environments. It may lead to instability or unsupported configurations. For guaranteed reliability, always use identical part numbers and speeds across all channels.
Q: Is this memory compatible with my system?
A: This DDR5 RDIMM works with servers using Intel Xeon Scalable (Sapphire Rapids) or AMD EPYC 9004 Series platforms that support 4800MT/s registered ECC memory. Please verify your motherboard’s qualified vendor list.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical DIMMs symmetrically across memory channels, following your server board’s population guide. Typically, fill one DIMM per channel first, then add matching pairs to balance interleaving and maximize bandwidth.
Q: Does this module support overclocking or XMP profiles?
A: No. As a server-grade Registered ECC DIMM, this module is designed for JEDEC standard 4800MT/s operation. XMP and overclocking are not supported to ensure 24/7 data integrity and platform stability.
Q: What warranty and typical failure rate can I expect?
A: This module includes a 1-year warranty. The typical annualized failure rate (AFR) for enterprise DDR5 RDIMMs is around 0.2–0.5% under specified operating conditions, ensuring high reliability for mission-critical workloads.