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| Model | M391B5273CH0-CK0 |
|---|---|
| Compliance Standards | EU RoHS,FCC |
| Product Type | Memory Module |
| Memory Capacity | 4 GB |
| Memory Technology | DDR3 |
| Product Voltage | 1.5V |
| RAM Speed | 1600MHz |
| RAM Standard | DDR3-1600/PC3-12800 |
| Error Identifying | ECC |
| Signal Type | Unbuffered |
| Column Access Strobe (CAS) | CL11 |
| Rank | Dual Rank x8 |
| Quantity of Pins | 240-pin |
| RAM Genre | UDIMM |
This DDR3-1600 UDIMM with ECC is purpose-built for entry-level servers and workstations running data-sensitive workloads like file servers or light virtualization, where its error-correcting code ensures high data integrity by detecting and correcting single-bit errors. The dual-rank x8 organization optimizes memory bank utilization for improved throughput, making it a reliable, cost-effective upgrade for unbuffered ECC platforms requiring stable 1.5V operation.
1. ECC protection automatically corrects single-bit errors, drastically reducing silent data corruption risks in always-on file servers and critical database workloads.
2. Dual Rank x8 organization interleaves memory banks for higher effective bandwidth, sustaining throughput when multiple virtual machines contend for shared resources.
3. Unbuffered UDIMM design minimizes electrical load and cost, making it an ideal match for entry-level servers and small-office NAS appliances that still demand data integrity.
4. The 1.5V standard voltage ensures broad platform compatibility and stable thermals during 24/7 operation, avoiding unexpected shutdowns in non-climate-controlled branch offices.
5. DDR3-1600 delivers up to 12.8 GB/s peak transfer rate per channel, accelerating in-memory caching and virtualization overhead without throttling under moderate consolidation densities.
Stability in small server environments depends on far more than just capacity, and the Samsung M391B5273CH0-CK0 UDIMM is engineered precisely for those workloads where a silent memory error isn’t an annoyance—it’s a potential outage. This unbuffered ECC module immediately addresses the core pain point of single‑socket servers and entry‑level workstations: undetected bit flips caused by cosmic radiation or electrical noise. In a 24/7 virtualisation cluster hosting lightweight hypervisors, uncorrected errors can corrupt guest state and trigger unexplained reboots. The built‑in error‑correcting code catches and corrects single‑bit errors so your containers and headless services stay consistent without forcing you into costly registered DIMM platforms.
The dual‑rank x8 construction pushes bandwidth utilisation further. When you run an in‑memory database such as Redis behind a high‑traffic application, rank interleaving allows the memory controller to issue commands to one rank while reading from the other, effectively doubling the data‑burst access window. Combined with DDR3‑1600 at CL11, small‑block random reads stay responsive under concurrency—the very pattern that makes a caching layer feel snappy. And because this is a standard 240‑pin UDIMM operating at a reliable 1.5 V, it slots straight into the most common Intel Xeon E3 or equivalent platforms without forcing a board swap. EU RoHS compliance guarantees that you’re not trading environmental responsibility for that uptime, giving you a straightforward, field‑proven upgrade path for aging but capable single‑processor systems.
General Virtualization
For virtualized environments using these 4 GB DDR3 ECC UDIMMs, populate all available memory channels with identical modules to maintain reliable ECC protection and maximize throughput. A 4-module configuration (16 GB total) serves as an efficient baseline for running several lightweight VMs on a single-socket server. If the platform supports additional slots, scaling to 6 or 8 modules (24–32 GB) allows denser consolidation without sacrificing error correction.
In-Memory Database
In-memory databases demand both data integrity and low latency, making ECC mandatory. Build a 4-DIMM set of these 4 GB UDIMMs for a 16 GB pool, adequate for small Redis or Memcached instances on an entry-level server. Where greater capacity is needed, migrate to a board supporting more UDIMM slots or larger-capacity ECC modules, always keeping all sticks identical to preserve stable operation and ECC coverage.
High-Performance Computing
HPC nodes benefit from uniform memory-channel population to sustain peak DDR3-1600 bandwidth. Install four matching 4 GB modules in a quad-channel configuration for 16 GB of reliable, ECC-protected memory, well-suited for computational tasks that do not require extreme per-node capacity. This setup guards against silent data corruption during long-running simulations, and identical DIMMs guarantee balanced interleaving and predictable performance.
Tested DDR3 server memory for Dell PowerEdge R210 II, HP MicroServer Gen8, and more.
Q: Can I mix this M391B5273CH0-CK0 with other memory modules of different brands or speeds?
A: Mixing is not recommended. Mismatched modules may cause instability or failure to boot. For reliable ECC operation, install identical modules with matching speed, rank, and timings across all channels.
Q: Is this memory compatible with my system?
A: This UDIMM ECC module requires a workstation or server motherboard with a chipset that supports unbuffered ECC DDR3, such as Intel C202/C204/C206 or AMD 900-series chipsets paired with an ECC-capable processor.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical modules in channel-matched slots first, typically A1 and B1 for dual-channel. Refer to your motherboard manual for slot numbering to enable dual-channel interleaving without bandwidth reduction.
Q: Does this module support overclocking or XMP profiles?
A: No, this is a server-grade ECC UDIMM adhering to JEDEC DDR3-1600 standards. XMP and overclocking are not supported, as stability and data integrity are prioritized over non-standard frequencies.
Q: What warranty and typical failure rate can I expect?
A: This module is covered by a one-year warranty. Annualized failure rates for original Samsung ECC UDIMMs are typically under 0.3%, ensuring excellent long-term reliability in 24/7 workstation environments.