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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 64 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2 V |
| RAM Speed | 2933 MHz |
| RAM Standard | DDR4-2933/PC4-23400 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL21 |
| Rank | Dual Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This 64GB DDR4-2933 Registered ECC RDIMM (PC4-23400) is purpose-built for enterprise server platforms running virtualization, in-memory databases, and other mission-critical workloads that demand uncompromising data integrity. Its dual-rank x4 organization combined with registered signaling stabilizes high-density memory channels at a CAS latency of CL21, while ECC protection continuously corrects single-bit errors to prevent silent data corruption and reduce unplanned downtime.
1. ECC protection automatically corrects single-bit errors, preserving data integrity for mission-critical databases and eliminating silent corruption in 24/7 virtualization clusters.
2. Registered buffering stabilizes high-density memory channels, allowing daisy-chained DIMMs to run reliably under the constant heavy loads of multi-socket server platforms.
3. Dual Rank x4 organization saturates the memory bus with parallel bank access, sustaining predictable throughput when dozens of VMs contend for shared resources.
4. A 64-gigabyte capacity per stick maximizes available memory slots in dense rack servers, supporting larger RAM disks and heavier consolidation ratios without resorting to costly scale-out.
5. 2933 megatransfers per second data rate delivers the bandwidth headroom required for real-time in-memory analytics, cutting query response times even during peak transaction bursts.
When you are running a dense virtualization cluster or an in-memory database like SAP HANA, memory errors are not just a nuisance—they are a threat to business continuity and data integrity. The Samsung M393A8G40AB2-CVFBY is engineered specifically for these mission-critical server environments. Its 64 GB capacity per module allows you to pack more virtual machines into the same physical host, reducing server sprawl and licensing costs. The Registered DIMM architecture with on-module registers buffers the command and address signals, so even when you populate all 24 or 32 DIMM slots in a rack server, the signal integrity remains rock solid, preventing the boot failures and intermittent crashes that plague unbuffered memory under heavy load.
Meanwhile, ECC technology silently corrects single-bit errors caused by background radiation or electrical noise—flipping a bit in a financial transaction or a patient record is simply not an option. Coupled with a dual-rank design and a 2933 MT/s data rate, the module interleaves accesses across internal banks to serve more concurrent data requests, directly translating to faster query responses and smoother live migration of virtual machines. In your real-time analytics engine, this means consistent low latency under pressure. For database servers and hypervisors, this memory means you invest in uptime, predictability, and peace of mind, not just specs.
Server Memory Identified
This is a 64GB DDR4-2933 Registered ECC RDIMM, designed for server platforms requiring data integrity and high capacity.
General Virtualization
For general virtualization, populate all memory channels with identical 64GB RDIMMs to maximize capacity per NUMA node. In dual-socket servers, aim for balanced configurations like 8 x 64GB (512GB total) to support numerous VMs with moderate overcommitment, while ECC protection guards against cosmic bit-flips in multi-tenant environments.
In-Memory Database
In-memory databases demand low latency and giant capacities. Deploy a full complement of 64GB RDIMMs across all 16 or more DIMM slots, delivering 1TB or higher per node for Redis, Memcached or SAP HANA instances. Dual-rank x4 modules boost bandwidth, and ECC is mandatory to prevent silent data corruption in transactional workloads.
High-Performance Computing
For HPC, balance bandwidth and capacity. Populate all memory channels with one 64GB RDIMM per channel to achieve maximum interleave and peak throughput — typically 8 or 16 modules in a dual-socket node. Registered ECC ensures stability during multi-day simulation runs, and the 2933MT/s speed aligns with modern Xeon Scalable memory controllers for floating-point-heavy applications.
Rigorously tested for server environments; proven compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, and more.
Q: Can I mix this M393A8G40AB2-CVFBY with other memory modules of different brands or speeds?
A: Mixing RDIMMs of different brands, speeds, or ranks is not recommended. It can degrade signal integrity, force lower speeds, or cause system instability. Always populate identical modules for validated server reliability.
Q: Is this memory compatible with my system?
A: This 64GB DDR4-2933 ECC Registered DIMM is designed for servers using Intel Xeon Scalable or AMD EPYC platforms. Verify that your motherboard’s QVL lists this Samsung module and supports Dual Rank x4 RDIMMs at this capacity.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server board’s population guide, typically filling identical DIMMs in balanced channels per CPU. For dual-socket systems, populate the farthest slots first to maximize memory interleaving and bandwidth.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a JEDEC-compliant DDR4-2933 RDIMM with fixed CL21 timings. Server-class registered memory does not support overclocking or XMP profiles; it operates strictly at standard specifications for data integrity.
Q: What warranty and typical failure rate can I expect?
A: This Samsung module includes a 1-year warranty. Enterprise-grade RDIMMs exhibit extremely low failure rates (AFR <0.3%) under proper thermal and ESD conditions, ensuring long-term reliability in 24/7 server environments.