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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 16 GB |
| Memory Technology | DDR4 |
| RAM Speed | 2666 MHz |
| RAM Standard | DDR4-2666/PC4-21300 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL19 |
| Rank | Dual Rank |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This is a server-class DDR4-2666 RDIMM with ECC and registered signaling, engineered for stability in virtualization and in-memory database workloads. Its dual-rank configuration boosts memory bandwidth efficiency, while the ECC function ensures end-to-end data integrity for mission-critical enterprise platforms.
1. ECC protection silently corrects single-bit errors in real time, preserving data integrity for virtualized financial databases and preventing costly application crashes.
2. Registered logic buffers stabilize high-density memory configurations, enabling fully loaded server boards to sustain 24/7 operation without signal degradation.
3. Dual Rank interleaving maximizes channel utilization by overlapping internal bank accesses, directly improving the throughput of hosted virtual machines under heavy consolidation.
4. The 16 GB per-module density allows dense memory footprints in rack servers, supporting more containers and VMs without forcing expensive upgrades.
5. DDR4-2666 throughput delivers the steady bandwidth required for hyperconverged infrastructure, smoothly handling simultaneous storage, compute, and network workloads.
The Samsung M393A2K43DB2-CTD8Q is a 16GB DDR4-2666 Registered DIMM engineered specifically for server environments, and its four defining characteristics directly address the real-world pain points of data center operators. ECC protection is non-negotiable when you run a virtualization cluster hosting dozens of financial transaction VMs; a single undetected bit-flip caused by background radiation can silently corrupt a ledger database, but this module catches and corrects those errors in-flight, turning potential silent data corruption into a non-event. The Registered signal buffering re-drives address and command lines, which means you can fully populate all memory channels without degrading signal integrity—a lifesaver in hyperconverged infrastructure where a single node may demand 512GB or more to keep latency-sensitive in-memory databases like SAP HANA entirely in RAM. Its Dual Rank architecture interleaves access across two sets of memory chips, effectively hiding row cycle delays and sustaining higher bandwidth under the heavy, random read/write workloads of simultaneous database queries. Finally, the 2666MT/s speed with CL19 latency strikes the optimal balance between fast data delivery and reliable, predictable power consumption, ensuring your always-on manufacturing execution system or private cloud meets service-level agreements without thermal surprises. For your mission-critical platform, this RDIMM is not just a component—it is your insurance policy against downtime and data loss.
General Virtualization
For general virtualization hosts, populate at least six to eight of these 16 GB RDIMMs to reach 96–128 GB total capacity, balancing cost and VM density. Distribute modules evenly across all memory channels (e.g., one DIMM per channel in a dual‑socket system) to maximize bandwidth, and leave half the slots free for future scale‑out without replacing existing DIMMs.
In‑Memory Database
In‑memory databases demand large, low‑latency capacity; start with a minimum of 256 GB using sixteen 16 GB RDIMMs, fully populating one DIMM per channel on each socket. Configure identical dual‑rank DIMMs across all channels and use balanced interleaving to sustain high throughput—stepping up to 512 GB by filling the second DIMM per channel when the dataset grows.
High‑Performance Computing (HPC)
HPC clusters favor memory bandwidth over raw capacity for most workloads. Install one 16 GB RDIMM per channel across all available channels—typically eight or twelve modules per node—ensuring symmetric population to achieve peak rated memory bandwidth. Reserve remaining slots for scaling if the simulation footprint expands, but prioritize uniform dual‑rank DIMMs to avoid performance penalties from mixing ranks or unbalanced configurations.
Rigorously tested server memory, compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 and more.
Q: Can I mix this M393A2K43DB2-CTD8Q with other memory modules of different brands or speeds?
A: Mixing RDIMMs of different brands or speeds is not recommended. The server will downclock all modules to the slowest DIMM and may face stability issues. For reliable operation, use identical part numbers in the same channel.
Q: Is this memory compatible with my system?
A: This DDR4-2666 ECC Registered DIMM is designed for servers and workstations using Intel Xeon Scalable or AMD EPYC platforms. Verify your motherboard or server model supports 288-pin RDIMM, 2Rx8 configuration, and DDR4-2666.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server platform's memory population guide. Typically, populate identical RDIMMs in sets that match the memory channels, starting with the first slot of each channel. Uneven loading can reduce bandwidth or disable ECC.
Q: Does this module support overclocking or XMP profiles?
A: No, this is a server-grade ECC RDIMM. It adheres to JEDEC standard DDR4-2666 timing (CL19) and does not support XMP or overclocking. Reliability and data integrity are prioritized over high-frequency tuning.
Q: What warranty and typical failure rate can I expect?
A: This module comes with a one-year warranty. When operated within specifications, ECC RDIMMs like this Samsung part exhibit an extremely low annualized failure rate, typically well below 0.5% in controlled server environments.