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| Product Type | Memory Module |
|---|---|
| Compliance Standards | |
| Memory Capacity | 16 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2 V |
| RAM Speed | 2666 MHz |
| RAM Standard | DDR4-2666/PC4-21300 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL19 |
| Rank | Dual Rank x8 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
Designed for enterprise servers and virtualization platforms, this DDR4-2666 16GB RDIMM with ECC and registered signal technology ensures data integrity and system stability under high-density memory configurations. The dual-rank x8 organization and CL19 latency deliver consistent throughput ideal for memory-intensive workloads such as in-memory databases and large-scale virtualization.
1. Continuous error correction protects against bit flips, ensuring mission-critical services and in-memory computations stay accurate around the clock.
2. Buffered signal architecture strengthens signal integrity, allowing fully loaded memory channels across dozens of DIMMs in a single server.
3. Dual-rank organization alternates internal banks to boost command efficiency, improving throughput under heavy virtualization and transactional loads.
4. Generous per-module density supports large memory footprints, enabling consolidation of more virtual machines and containers per physical host.
5. Low operating voltage reduces power consumption per DIMM, directly lowering electricity and cooling expenses in hyperscale deployments.
Designed for the data center, the Samsung M393A2K43DB2-CTD7Y is a registered DDR4-2666 RDIMM whose four defining characteristics directly answer the demands of modern server infrastructure. ECC error correction goes beyond simple data protection—in a virtualization cluster hosting dozens of VMs, a single undetected bit-flip can corrupt hypervisor memory, cascading into service outages; this module’s ECC actively prevents such silent data corruption, preserving uptime. The registered signal type buffers command and address lines, which becomes critical when populating dense server boards: it maintains clean signal integrity across 16GB and larger configurations, so a database server handling high‑frequency transactions never stalls due to electrical loading. With dual‑rank x8 organization, the memory interleaves accesses across two internal ranks, effectively increasing bandwidth for memory‑intensive workloads like in‑memory databases (SAP HANA, Redis). Paired with 1.2V low‑voltage operation, it reduces thermal stress in fully loaded racks, ensuring sustained 2666MT/s throughput under 24/7 operation without throttling—letting your analytics queries finish on time, not when the cooling catches up.
Server Memory Identification
This module is a DDR4-2666 Registered ECC RDIMM, designed exclusively for server platforms. Its error correction and registered buffer enable stable operation under sustained, mission-critical workloads.
General Virtualization
Balance capacity and channel bandwidth by populating at least six modules in a dual-socket system to ensure uniform memory distribution across all memory channels. Start with 16 GB RDIMMs like this one to build a 96 GB or 192 GB pool, which comfortably hosts dozens of moderate virtual machines without overcommitting resources.
In-Memory Database
Prioritize capacity over raw speed to keep entire datasets in RAM. Fill all channels with these 16 GB dual-rank modules to reach 256 GB or 512 GB per node, leveraging rank interleaving for lower latency. ECC protection is critical here to prevent silent data corruption in financial or real-time analytics workloads.
High-Performance Computing
Maximise bandwidth by installing one DIMM per channel in a balanced multi-socket configuration; dual-rank x8 modules help sustain high data rates. Configurations often scale to 128 GB per node using eight modules, and Registered ECC ensures long-running simulations complete without memory-induced failures.
Rigorously tested server memory, compatible with Dell PowerEdge R740/R640, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, and Supermicro X11.
Q: Can I mix this M393A2K43DB2-CTD7Y with other memory modules of different brands or speeds?
A: Mixing with different brands or speeds is not recommended for this ECC Registered DIMM. It may compromise signal integrity and cause system instability. For guaranteed reliability, always install identical modules with matching rank, speed, and part number.
Q: Is this memory compatible with my system?
A: This DDR4-2666 ECC RDIMM is designed for server platforms supporting Intel Xeon Scalable (Purley) and AMD EPYC 7000 series. It requires a C620-series or equivalent chipset. Check your motherboard’s qualified vendor list for full compatibility.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate DIMMs symmetrically across memory channels, starting with slot 1 of each channel for each processor. On dual-socket boards, balance capacity per CPU. Always follow the server manual for population order to maximize aggregate bandwidth and interleaving.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a JEDEC-compliant ECC Registered DIMM optimized for data integrity and maximum compatibility. It does not support overclocking or XMP. JEDEC-standard timings ensure predictable performance in mission-critical server environments.
Q: What warranty and typical failure rate can I expect?
A: This module includes a one-year warranty. Enterprise-class memory like this DDR4 RDIMM typically exhibits an annualized failure rate (AFR) below 0.5% under proper environmental conditions, ensuring high long-term reliability for data-center deployments.