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| Model | M393A1K43BB1-CTD6Q |
|---|---|
| Product Type | Memory Module |
| Compliance Standards | CE,WEEE,RoHS |
| Memory Capacity | 8 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2V |
| RAM Speed | 2666MHz |
| RAM Standard | DDR4-2666/PC4-21300 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL19 |
| Rank | Single Rank x8 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
DDR4-2666 RDIMM with ECC and registered signaling, the M393A1K43BB1-CTD6Q is engineered for server-class platforms, excelling in virtualized environments and in-memory databases where data integrity and sustained stability under heavy load are critical. Its single-rank x8 configuration minimizes electrical loading on the memory bus while ECC and register clock drivers ensure error-free operation and signal integrity at scale.
1. ECC memory detects and corrects single-bit errors in real time, preserving data integrity for mission‑critical databases and financial transactions that cannot tolerate silent corruption.
2. Registered signal buffering redistributes the command and address load, enabling servers to populate more DIMMs per channel without sacrificing stability—essential for high-density virtualization hosts.
3. DDR4-2666 delivers a peak bandwidth of 21.3 GB/s, providing the headroom needed to handle concurrent data streams from dozens of virtual machines without I/O bottlenecks.
4. The 8 GB capacity strikes a cost‑efficient sweet spot for scale‑out cloud nodes and microservices, where moderate memory per instance lowers total cost of ownership while maintaining service density.
5. Single Rank x8 organization places a lighter electrical load on the memory controller, helping sustain full clock speed even when every channel is fully occupied in a consolidated server.
The Samsung M393A1K43BB1-CTD6Q is a server-class Registered ECC DDR4 memory module purpose-built for workloads where every bit of data and every millisecond of uptime counts. In a dense virtualization cluster hosting dozens of VMs, the Registered signal buffer actively re-drives command and address signals, eliminating electrical loading issues that would otherwise degrade stability and cause costly, unpredictable crashes. That stability means your entire tenant environment stays online even during peak consolidation. Simultaneously, integrated ECC protection silently detects and corrects single-bit errors, a non-negotiable defense against silent data corruption for in-memory databases like Redis or SAP HANA, where even a single erroneous bit can cascade into financial miscalculations or cache poisoning. The 8GB single-rank x8 organization at 2666MHz achieves CL19 latency, balancing quick random access with strong throughput to keep VM response times crisp and database hit rates high. Operating at just 1.2 volts, this DIMM also draws measurably less power, directly reducing thermal stress and operational expense across a fleet of servers. For your virtualized infrastructure and real-time analytic platforms, M393A1K43BB1-CTD6Q translates into continuous data integrity, hardened reliability, and a more energy-efficient data center.
Server Memory Capacity Planning Guide
The Samsung M393A1K43BB1-CTD6Q is a DDR4-2666 Registered ECC DIMM (RDIMM) with 8GB capacity, single-rank x8 organization, and CL19 latency. Designed for server platforms, it provides data integrity and stability required for enterprise workloads.
General Virtualization
For hypervisor hosts running multiple VMs, memory is often the first bottleneck. Populate six or eight identical 8GB RDIMMs (48–64 GB total) across balanced memory channels to maximize bandwidth and maintain NUMA symmetry. This configuration comfortably supports 15–20 light to medium virtual machines.
In-Memory Database
In-memory databases like Redis or SAP HANA demand capacity and fault tolerance. Equip the server with twelve or sixteen of these 8GB modules for 96–128 GB, leaving half the slots for future expansion. Opt for dual-rank DIMMs if available for slightly higher density, but single-rank can deliver lower latency in read-heavy workloads when fully populating channels is not possible.
High-Performance Computing
HPC clusters benefit from bandwidth over raw capacity. Install six 8GB RDIMMs (48 GB total) in a configuration that populates one DIMM per channel across six channels, achieving peak memory bandwidth per node. The 2666 MT/s speed and ECC ensure result accuracy during long-running simulations, and the 1.2 V operation helps control thermal output in dense racks.
Rigorously tested server memory, compatible with Dell PowerEdge R740, HPE ProLiant DL380 Gen10, and Lenovo ThinkSystem SR650.
Q: Can I mix this M393A1K43BB1-CTD6Q with other memory modules of different brands or speeds?
A: Mixing is strongly discouraged. Registered DIMMs require identical rank, voltage, and speed for stable operation. Using dissimilar modules may cause system instability or prevent boot on server platforms.
Q: Is this memory compatible with my server system?
A: This DDR4-2666 RDIMM is compatible with Intel Xeon Scalable and AMD EPYC platforms that support registered ECC memory. Verify your motherboard's QVL for 8GB single-rank x8 modules.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical DIMMs per channel, starting with the farthest slot from the CPU. Follow your server manual; typically, balance channels and avoid mixing ranks for maximum memory bandwidth.
Q: Does this module support overclocking or XMP profiles?
A: No. As a registered ECC RDIMM, this module runs at JEDEC standard DDR4-2666. Overclocking and XMP are not supported and may compromise data integrity on server platforms.
Q: What warranty and typical failure rate can I expect?
A: This 8GB RDIMM includes a one-year warranty. With rigorous binning and ECC technology, the annualized failure rate is typically less than 0.5%, ensuring reliable long-term server operation.