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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) | CL40 |
| Rank | Dual Rank |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
Designed as a server-grade DDR5 64GB RDIMM with ECC and registered signaling, this module is purpose-built for mission-critical platforms running virtualization, large-scale memory databases, and data-integrity-sensitive workloads. Its dual-rank configuration maximizes bank-level parallelism for higher bandwidth utilization at the rated DDR5-4800 speed, while the registered command/address buffer reduces electrical loading on the memory controller, ensuring rock-solid signal integrity and consistent reliability in fully loaded 2DPC configurations.
1. A single 64GB module allows dense population of server DIMM slots, dramatically increasing the memory footprint available for virtualization hosts and large in-memory databases without expanding the physical node count.
2. ECC continuously detects and corrects single-bit errors as they occur, preserving long-term data integrity essential for financial transactions, critical record-keeping, and 24/7 operation against silent data corruption.
3. The registered clock driver re-drives command and address signals across fully loaded memory channels, ensuring rock-solid signal integrity and stable operation when all DIMM slots are populated in scale-up server architectures.
4. Dual rank organization interleaves internal memory banks to overlap access cycles, which saturates the memory bus with data and sustains higher bandwidth under heavy concurrent requests from many-core server CPUs.
5. The DDR5-4800 data rate translates to 38.4 GB/s of peak bandwidth per module, effectively feeding modern multi-socket platforms with the throughput needed for real-time analytics, AI training batches, and high-frequency trading.
When you’re running a dense virtualization cluster or an in‑memory database like SAP HANA, every memory transaction must be absolutely trustworthy. The M321R8GA0BB0-CQKMS is a 64GB DDR5 registered DIMM purpose‑built for exactly that reality. Its integrated ECC silently corrects single‑bit errors and detects multi‑bit faults, guarding against silent data corruption that could crash a financial transaction or a virtual machine migration. The registered interface buffers command and address signals, so even with dual‑rank 64GB modules fully populating a server, the memory controller stays stable and the signal integrity remains clean—a direct antidote to the boot failures and intermittent slowdowns that plague high‑capacity configurations. In a VMware farm, that means you can confidently run dozens of vCPUs on a single host without memory‑driven instability. For a real‑time analytics engine, the DDR5‑4800 speed combined with dual‑rank interleaving delivers the sustained bandwidth that keeps queries tight and latency predictable. Every bit is protected, every rank works in concert, and every watt of the 1.1V power budget is respected—so your rack delivers consistent, mission‑critical performance around the clock.
General Virtualization
For a dual-socket virtualization host, populate six or eight identical 64 GB RDIMMs per CPU to balance memory bandwidth and capacity. This provides 384–512 GB per node, comfortably supporting 50–100 typical VMs, while leaving DIMM slots free for future scaling. Use balanced memory channels and avoid mixing ranks or capacities to prevent NUMA penalties.
In-Memory Database
Start with twelve 64 GB modules across six channels per socket, delivering 768 GB per CPU and maximizing interleaving for latency-sensitive workloads. Dual‑rank RDIMMs at DDR5-4800 push bandwidth to over 300 GB/s per socket, ideal for Redis, SAP HANA, or Memcached instances. Plan for 1 DIMM per channel to keep the memory bus at full speed.
High-Performance Computing
Configure all eight channels per CPU with a single 64 GB RDIMM each, yielding 512 GB per socket and peak memory throughput. This topology minimizes access contention during large‑scale MPI or OpenMP jobs. For memory‑capacity‑bound simulations, double up with a second identical DIMM per channel, accepting a slight speed drop to hit 1 TB nodes.
Rigorously tested DDR5 server memory: compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3.
Q: Can I mix this M321R8GA0BB0-CQKMS with other memory modules of different brands or speeds?
A: Mixing RDIMMs of different brands, speeds, or ranks is strongly discouraged. It often violates platform validation rules and can cause system instability or POST failures in server environments where signal integrity is critical.
Q: Is this memory compatible with my Intel Xeon or AMD EPYC server platform?
A: This DDR5-4800 RDIMM is validated for Intel Xeon Scalable (4th Gen) and AMD EPYC 9004 series processors. Confirm your motherboard supports 4800MT/s registered ECC modules and a 64GB dual-rank DIMM configuration.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical DIMMs per channel, starting with the furthest slot from the CPU. For dual-rank RDIMMs, one DIMM per channel often yields maximum frequency. Always follow your server board's memory population guidelines for balanced interleaving.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a JEDEC-compliant DDR5-4800 server RDIMM running at a fixed 1.1V with CL40 timings. It does not support XMP or overclocking, as enterprise memory prioritizes data integrity and reliability over speed tuning.
Q: What warranty and typical failure rate can I expect?
A: This module carries a 1-year warranty. As a quality-tested Samsung RDIMM with ECC, the annualized failure rate (AFR) is exceptionally low, typically well below 0.5% when operated within specified temperature and voltage parameters.