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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 2 GB |
| Memory Technology | DDR3 |
| Product Voltage | 1.5V |
| RAM Speed | 1333MHz |
| RAM Standard | DDR3-1333/PC3-10600 |
| Error Identifying | ECC |
| Signal Type | Unbuffered |
| Column Access Strobe (CAS) | CL9 |
| Rank | Single Rank x8 |
| Quantity of Pins | 240-pin |
| RAM Genre | UDIMM |
This DDR3-1333 Unbuffered ECC UDIMM is engineered for entry-level servers and workstations, delivering single-bit error correction critical for data integrity in applications like light virtualization and memory-resident databases. Its single-rank x8 configuration and CL9 latency ensure stable, low-power operation at 1.5V across a wide range of platforms, while the unbuffered signaling maintains cost-effective performance for ZFS storage and small-scale ECC-dependent workloads.
1. ECC protection detects and corrects single-bit errors in real time, preserving data integrity for entry-level server workloads that cannot tolerate silent corruption.
2. Unbuffered signal type reduces component complexity while maintaining reliable command-to-DRAM communication, ideal for cost-conscious server builds running lightweight services.
3. The 2 GB capacity suits dedicated microservices or small-scale network appliances where a lean memory footprint keeps software overhead minimal and predictable.
4. DDR3-1333 bandwidth delivers steady throughput for concurrent web hosting and file serving tasks, balancing energy draw with performance under continuous operation.
5. Single Rank x8 organization imposes lighter electrical loading on the server chipset, which improves stability when populating multiple DIMMs in space-constrained 1U platforms.
This Samsung M391B5773CH0-CH9 is an unbuffered ECC UDIMM, purpose-built for entry-level servers and workstations where data integrity and budget-conscious reliability define the workload. Its ECC capability matters most when a single-bit memory error can silently corrupt a financial record in a small business database or destabilize a lightweight virtualization host running multiple services. In a home-lab NAS storing irreplaceable family archives, ECC actively detects and corrects those background bit flips caused by cosmic radiation, meaning your backups remain trustworthy rather than rotting into hidden corruption. The unbuffered architecture keeps latency low, giving a virtualization platform snappier response when several lightweight containers compete for memory access, while the single-rank x8 organization and CL9 timing on a 1333MHz DDR3 clock strike the exact balance that aging server chipsets demand for flawless signal integrity. When you maintain a legacy point-of-sale or imaging server, this 1.5V, 240-pin UDIMM installs without the complex board-level tuning registered modules require, reducing downtime and compatibility headaches. What this translates into is simple: predictable uptime for workloads that cannot afford silent data loss, delivered in a form factor that respects your existing infrastructure’s limits.
Capacity Planning Guide for DDR3-1333 ECC Unbuffered Memory Modules
Based on the ECC Unbuffered 240-pin UDIMM specification, this 2GB DDR3-1333 module is a server-class component best deployed in single-socket servers or workstations requiring data integrity. Below are capacity planning recommendations for typical server workloads.
General Virtualization
For light virtualization hosts, aim for at least 32GB to support a dozen VMs. Populate 16 identical 2GB modules across all memory channels—dual-channel or quad-channel—in balanced configurations (e.g., four modules per channel). ECC UDIMMs ensure guest stability by correcting single-bit errors, a must for multi-tenant environments.
In-Memory Database
In-memory databases like Redis or SAP HANA profit from raw capacity and reliability. Use the maximum supported DIMM slots on your board, filling each channel symmetrically with these 2GB ECC modules to reach 64GB or more. The ECC feature prevents silent data corruption that would instantly compromise dataset integrity, while unbuffered latency benefits small transactional workloads.
High-Performance Computing
HPC clusters often combine per-node capacity and bandwidth. Equip each node with 16–32 modules (32–64GB) evenly distributed across all memory channels to sustain peak 1333MHz throughput. Single-rank x8 modules reduce electrical loading, allowing stable operation in dense multi-slot configurations. ECC is non-negotiable here to protect long-running parallel jobs from bit flips.
Rigorously tested, this ECC UDIMM is compatible with servers: Dell PowerEdge T110 II, HP ML110 G7, Lenovo TS140.
Q: Can I mix this M391B5773CH0-CH9 with other memory modules of different brands or speeds?
A: For mission-critical servers, we strongly recommend using identical modules to ensure ECC functionality and stability. Mixing different brands or speeds may force all modules to the lowest common speed and could introduce parity errors.
Q: Is this memory compatible with my system?
A: This ECC UDIMM is compatible with select Intel Xeon E3-1200 v2/v3 series and AMD AM3+ platforms that support unbuffered ECC DDR3 memory. Always verify your server motherboard's QVL before purchase.
Q: What is the recommended DIMM population order for optimal performance?
A: Refer to your server board manual. Typically, populate identical modules in slots of the same color, starting with the channel farthest from the CPU for optimal signal integrity and balanced memory interleaving.
Q: Does this module support overclocking or XMP profiles?
A: No, this is a server-grade ECC module designed for data integrity. It does not support overclocking or XMP profiles; it runs at standard JEDEC timings for maximum reliability.
Q: What warranty and typical failure rate can I expect?
A: This module comes with a 1-year warranty. As a genuine Samsung server memory, the typical annualized failure rate (AFR) is very low, around 0.1-0.3% under normal operating conditions.