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| Product Type | Memory Module |
|---|---|
| Compliance Standards | |
| Memory Capacity | 32 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2 V |
| RAM Speed | 3200 MHz |
| RAM Standard | DDR4-3200/PC4-25600 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL22 |
| Rank | Dual Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
Optimized for server platforms, this 32GB DDR4-3200 Registered ECC RDIMM (PC4-25600) delivers uncompromising data integrity with ECC and a registered signal type that enhances signal stability in high-density configurations. The dual-rank x4 organization enables robust memory interleaving, making it ideal for virtualization, in-memory databases, and latency-sensitive enterprise workloads where reliability and sustained bandwidth are critical.
1. Registered clock driver buffers address and control lines, enabling stable operation across fully loaded memory channels in large-scale server deployments without signal degradation.
2. ECC protection immediately corrects single-bit errors and detects multi-bit faults, ensuring non-stop data integrity for financial transactions and virtualization hosts where memory errors are unacceptable.
3. A 32GB capacity per module allows hypervisors to allocate more virtual machines per physical server, improving consolidation ratios while maintaining dedicated memory resources.
4. DDR4-3200 peak bandwidth of 25.6 GB/s per channel accelerates in-memory databases and real-time analytics, preventing memory bottlenecks under concurrent query loads.
5. Dual Rank x4 organization interleaves access across internal banks to sustain full channel utilization, delivering consistent low-latency performance for latency-sensitive enterprise workloads.
The Samsung M393A4K40EB3-CWEBQ is a 32GB DDR4-3200 RDIMM engineered for server reliability. Four features make it pivotal. ECC corrects single-bit errors automatically. In virtualization, a single undetected error could crash a hypervisor or corrupt critical databases; with ECC, you eliminate that silent risk, preserving uptime across dozens of VMs per host. The registered buffer isolates the memory bus from electrical strain, allowing fully populated 24-DIMM servers to operate stably with massive capacities. For an in-memory database like SAP HANA, this means your entire working set remains reliably resident, with no degradation. Dual-rank x4 organization doubles data access parallelism, delivering higher effective bandwidth. This accelerates real-time analytics where large datasets are constantly scanned. DDR4-3200 speed at 1.2V ensures fast response without excessive heat, reducing operational expenses in dense racks. Together, they safeguard virtual infrastructure and memory-hungry transactional databases, ensuring continuous, accurate performance.
General Virtualization
For dense server virtualization, populate memory channels symmetrically to maximize bandwidth. We recommend installing six or eight identical 32GB RDIMMs per CPU to reach 192GB or 256GB, using one DIMM per channel (1DPC) at 3200 MT/s to avoid speed degradation. This balanced configuration provides ample capacity for dozens of virtual machines while maintaining low latency and high throughput for hypervisor overhead.
In-Memory Database
Low latency and error resilience are critical, making ECC Registered DIMMs mandatory. Deploy 12 or 16 modules of this 32GB RDIMM across all memory channels (2DPC if needed) to achieve 384GB or 512GB total capacity, keeping the entire dataset in RAM. Configure memory interleaving and set performance profiles to optimize for minimal CAS latency, as the dual-rank x4 design already offers strong signal integrity under sustained heavy loads.
High-Performance Computing
Maximize memory bandwidth per node by populating all eight channels of a modern server CPU with one 32GB RDIMM each, delivering 256GB at peak 3200 MT/s speed. For capacity-hungry HPC workloads, move to two DIMMs per channel with identical dual-rank modules, accepting a slight speed drop to 2933 MT/s while doubling capacity to 512GB. Always prioritize identical, validated RDIMMs per server to ensure stability during massively parallel simulations.
Rigorously tested DDR4 ECC RDIMM for Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2, and more.
Q: Can I mix this M393A4K40EB3-CWEBQ with other memory modules of different brands or speeds?
A: Mixing RDIMMs of different brands or speeds is strongly discouraged. It risks signal integrity issues and system instability. Always populate with identical part numbers to ensure reliable server operation.
Q: Is this memory compatible with my system?
A: This DDR4-3200 Registered ECC RDIMM is compatible with server platforms supporting 288-pin RDIMMs, including Intel Xeon Scalable and AMD EPYC. Please verify against your motherboard's qualified vendor list for guaranteed compatibility.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server motherboard manual: populate balanced channels per CPU, typically one DIMM per channel first. Use identical slot positions across memory risers to maximize interleaving and throughput while maintaining ECC integrity.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a server-class Registered ECC module operating at JEDEC standard DDR4-3200 CL22. Overclocking and XMP are not supported, as the priority is data integrity and 24/7 stability under mission-critical workloads.
Q: What warranty and typical failure rate can I expect?
A: This Samsung module includes a one-year warranty. Enterprise-grade RDIMMs exhibit extremely low annualized failure rates, typically below 0.5%, validated through rigorous burn-in testing for continuous server deployment.