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| Model | M393B5270DH0-CMA |
|---|---|
| Compliance Standards | EU RoHS,FCC |
| Product Type | Memory Module |
| Memory Capacity | 4 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 | Single Rank x4 |
| Quantity of Pins | 240-pin |
| RAM Genre | RDIMM |
Optimized for legacy server platforms, this Samsung DDR3-1866 Registered ECC DIMM (M393B5270DH0-CMA) is purpose-built to maintain data integrity in memory-intensive workloads such as virtualization and in-memory databases, where single-bit error correction prevents silent data corruption. Its Single Rank x4 configuration and registered signal topology reduce bus loading, enabling a stable 1866MT/s at a low CL13 latency on dual-socket systems even when populating all memory channels.
1. Registered DIMM architecture buffers command and control signals, enabling large-scale memory population that underpins stable operation of enterprise virtualization clusters and in-memory databases.
2. ECC single-bit error correction and multi-bit detection eliminate silent data corruption, preserving transactional accuracy vital for financial processing and long-running scientific computations.
3. The 4GB capacity provides a dedicated, predictable memory segment for lightweight containers or firmware-centric appliances, improving resource isolation in dense microserver environments.
4. DDR3-1866 speed sustains consistent per-channel bandwidth of nearly 14.9GB/s, reducing latency spikes during concurrent query execution in multi-threaded data analytics platforms.
5. Single Rank x4 organization balances signal loading and interleaving depth, ensuring uniform access latency across DIMMs and smoother performance delivery in multi-tenant cloud hosting.
The Samsung M393B5270DH0-CMA is a server-grade DDR3 Registered ECC DIMM built for data center reliability, and its four defining characteristics directly address the pain points of IT administrators running mission‑critical workloads. ECC protection is non‑negotiable: a single bit flip from background radiation can silently corrupt a virtual machine’s memory state, causing random crashes in a VMware cluster or introducing financial errors in a transactional database. ECC detects and corrects these events on the fly, preserving data integrity and uptime. The Registered buffer re‑drives address and command signals, stabilizing the memory bus when multiple DIMMs per channel are installed. For a heavily‑loaded virtualization host scaling to dozens of VMs, this means you can fill the available slots and still enjoy glitch‑free, predictable performance, avoiding mysterious blue screens. An 1866MHz clock speed paired with CL13 latency balances raw bandwidth with fast column access, accelerating database joins and in‑memory analytics in environments like a Redis cache or a Microsoft SQL Server instance. Finally, the single‑rank x4 topology minimizes electrical loading, so even in a fully populated server the memory bus retains its signal integrity and rated speed without throttling. These features translate directly into fewer outages and consistently fast response times for both virtualized infrastructure and memory‑hungry databases.
General Virtualization
Populate all memory channels equally with the 4GB DDR3-1866 RDIMM to sustain steady VM density. A dual‑socket server benefits from 12 identical modules (48 GB total) or 16 modules (64 GB), leaving some slots free for future growth. This balanced, single‑rank x4 configuration keeps the 1866 MT/s link speed and avoids rank‑penalty latencies under mixed loads.
In‑Memory Database
Maximize absolute capacity by filling every available DIMM slot with this module. A 24‑slot system achieves 96 GB, while a 48‑slot dual‑socket board reaches 192 GB—enough for moderate in‑memory datasets. Uniform module placement guarantees channel interleaving and consistent CL13 access, critical for low‑latency database operations.
High Performance Computing (HPC)
Bandwidth‑sensitive HPC codes require at least one module per memory channel; on a six‑channel platform, install 6 modules (24 GB) to unlock full controller bandwidth. For larger working sets, scale to two modules per channel (12 modules, 48 GB) using only identical single‑rank DIMMs. Never leave channels empty or mix ranks, as unbalanced populations degrade the sustained throughput needed for simulation and modeling.
Rigorously tested server memory, compatible with Dell R720, HP DL380p Gen8, Lenovo x3650 M4, Cisco C240 M3.
Q: Can I mix this M393B5270DH0-CMA with other memory modules of different brands or speeds?
A: Mixing is not recommended. This ECC Registered RDIMM requires identical module specifications to maintain signal integrity; mismatched speeds or brands may cause system instability or failed POST on server platforms.
Q: Is this memory compatible with my Intel Xeon E5 or AMD Opteron server board?
A: It is compatible with DDR3 platforms supporting 1866MHz Registered ECC RDIMMs. Verify your motherboard specifically accepts 1.5V 4GB single-rank x4 modules, typically Intel C600/C602/C604 or AMD SR56x0/G34 chipsets.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical modules per channel starting with the blue or farthest slot from the CPU, usually slots 1, 3, 5, etc. Refer to your server board’s manual for channel interleaving and balanced configurations to maximize throughput.
Q: Does this module support overclocking or XMP profiles?
A: No, server-grade RDIMMs operate only at JEDEC standard 1866MHz CL13. Overclocking and XMP are not supported, as stability and data integrity are prioritized in enterprise environments.
Q: What warranty and typical failure rate can I expect with this module?
A: This module includes a one-year warranty. Typical AFR for Samsung server memory is well below 0.5% under normal operating conditions, reflecting high reliability and rigorous factory testing.