Secure payments
Standard refund policy
Trade Assurance
| Model | M393B2G70EB0-CMAQ2 |
|---|---|
| Product Type | Memory Module |
| Compliance Standards | CE,WEEE,RoHS |
| Memory Capacity | 16 GB |
| Memory Technology | DDR3 |
| Product Voltage | 1.5V |
| RAM Speed | 1866MHz |
| RAM Standard | DDR3-1866/PC3-14900 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL13 |
| Rank | Dual Rank x4 |
| Quantity of Pins | 240-pin |
| RAM Genre | RDIMM |
This 16GB DDR3-1866 registered ECC module is engineered for legacy server platforms running mission-critical workloads such as virtualization and in-memory databases, where hardware-level error correction safeguards data integrity. Its dual-rank x4 architecture and registered buffering deliver superior signal stability across the 240-pin interface, enabling reliable high-density operation while CL13 latency balances access speed and power efficiency.
1. ECC error correction proactively detects and fixes single-bit memory faults, preserving data integrity in mission-critical databases and preventing costly server downtime.
2. Registered signal buffering stabilizes high-density memory channels, allowing multi-socket servers to reliably support large RAM populations under sustained load.
3. Dual Rank x4 organization interleaves access across internal banks, maximizing sustained bandwidth for virtualized workloads where many VMs contend for shared memory resources.
4. 1866MHz transfer speed accelerates in-memory caching and real-time analytics, shrinking response latencies for concurrent enterprise applications.
5. 16GB capacity per module packs sufficient density to scale hypervisor hosts to larger memory footprints without trading off registered signal reliability.
When you deploy virtualization clusters or run in‑memory databases, memory errors and signal degradation are more than technical footnotes—they are direct threats to uptime and data integrity. The Samsung M393B2G70EB0-CMAQ2, a 16 GB DDR3‑1866 Registered ECC DIMM, is engineered precisely for these mission‑critical environments. Its ECC circuitry silently detects and corrects single‑bit flips caused by background radiation or electrical noise, preventing silent data corruption that could cascade into failed transactions or a corrupted hypervisor state. The registered architecture places a buffer between the memory controller and the DRAM chips, sharply reducing bus loading. This means you can populate all available channels at full speed without compromising signal quality, a decisive advantage when scaling a VMware or Hyper‑V host to support dozens of virtual machines. The dual‑rank x4 organization further elevates real‑world throughput through interleaving, allowing one rank to respond while the other prepares, which is indispensable for the low‑latency lookups of an SAP HANA instance or a high‑frequency trading analytics engine. In a data centre where every watt and every microsecond carries a business cost, this module delivers the predictable, error‑free performance that keeps your services running and your data trustworthy.
This Samsung M393B2G70EB0 module is a 16GB DDR3-1866 Registered ECC RDIMM, designed for legacy dual-socket servers and workstations that demand data integrity. Its registered architecture enables high-capacity, stable memory configurations for critical enterprise workloads.
General Virtualization
Populate memory channels identically per CPU to avoid NUMA imbalance. Start with six or eight 16GB modules per processor (96–128GB total) to comfortably host a mixed fleet of virtual machines and leave headroom for peak loads. Adding modules in matched sets preserves memory interleaving and throughput.
In-Memory Database
Maximise capacity with a two-DIMM-per-channel (2DPC) layout, using identical dual-rank modules to maintain signal integrity. Fully loading a 12-slot dual-socket board with 16GB RDIMMs yields 192GB, letting large datasets operate entirely in RAM and drastically reducing query latency. Balance all channels evenly for consistent response times.
High-Performance Computing
Configure one 16GB RDIMM per memory channel (1DPC) to sustain the full 1866MT/s clock. Eight modules per node deliver 128GB and peak bandwidth for simulation and modeling jobs, while dual-rank x4 organization provides excellent streaming performance. Keep spare modules on hand for rapid replacement in clustered environments.
Rigorously tested server memory, compatible with Dell R720, R730, R630, T620, HP DL380p Gen8, DL360p Gen8, and more.
Q: Can I mix this M393B2G70EB0-CMAQ2 with other memory modules of different brands or speeds?
A: Mixing with different brands or speeds is not recommended for this RDIMM. It may cause system instability. For optimal performance and reliability, install identical modules in your server.
Q: Is this memory compatible with my system?
A: It is compatible with servers using Intel Xeon E5/E7 or AMD Opteron platforms that support DDR3-1866 ECC Registered DIMMs. Always verify with your motherboard's QVL for guaranteed compatibility.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server motherboard manual; typically, populate identical DIMMs per channel, starting with the slots farthest from the CPU. Balanced loading across all memory channels ensures maximum throughput.
Q: Does this module support overclocking or XMP profiles?
A: No, this enterprise-class RDIMM does not support overclocking or XMP profiles. It operates strictly at JEDEC-standard DDR3-1866 parameters to guarantee data integrity in server environments.
Q: What warranty and typical failure rate can I expect?
A: This module comes with a 1-year warranty. Enterprise RDIMMs exhibit very low failure rates under specified conditions, ensuring high reliability for mission-critical server deployments.