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| Model | M391B1G73AH0-YH9 |
|---|---|
| Compliance Standards | EU RoHS,FCC |
| Product Type | Memory Module |
| Memory Capacity | 8 GB |
| Memory Technology | DDR3 |
| Product Voltage | 1.35V |
| RAM Speed | 1333MHz |
| RAM Standard | DDR3-1333/PC3-10600 |
| Error Identifying | ECC |
| Signal Type | Unbuffered |
| Column Access Strobe (CAS) | CL9 |
| Rank | Dual Rank x8 |
| Quantity of Pins | 240-pin |
| RAM Genre | UDIMM |
This Samsung 8GB DDR3-1333 UDIMM with ECC (M391B1G73AH0-YH9) operates at an efficient 1.35V and is ideally suited for entry-level servers or workstations requiring data integrity in light virtualization, file serving, or NAS workloads. Its dual-rank x8 configuration and unbuffered ECC design deliver a balance of capacity and reliable error correction without the added latency of registered memory, ensuring stable 24/7 operation in platforms that demand consistent data accuracy.
1. ECC memory proactively detects and corrects single-bit data errors, preventing silent data corruption in always-on server environments where data integrity is non-negotiable.
2. Dual Rank x8 organization populates both ranks per channel to sustain peak memory bandwidth under concurrent virtual machine workloads, reducing performance jitter during heavy consolidation.
3. 1.35V low-voltage operation reduces overall server power draw and cooling overhead, directly translating to lower TCO in dense rack deployments running 24/7.
4. 8GB capacity per module provides an economical building block for light-duty virtualization hosts or dedicated microservices nodes, optimizing cost-per-VM without sacrificing data protection.
5. Unbuffered signal type eliminates the latency of register chips, giving single-socket servers and entry-level workstations faster memory access for latency-sensitive applications like small databases.
Designed for entry-level servers and small business workstations, the Samsung M391B1G73AH0-YH9 DDR3 module addresses the real-world demands of always-on systems. Its ECC feature is non-negotiable when you run a virtualization cluster hosting multiple VMs or a memory-intensive database like Redis. A single-bit error in an in-memory data store can corrupt critical financial records or crash an entire container; ECC automatically detects and corrects such errors, safeguarding data integrity without any downtime, which directly protects your revenue.
The module’s 1.35V low-voltage operation directly reduces power consumption and heat generation across a rack of 24/7 machines, cutting your cooling costs and improving hardware longevity. Its dual-rank x8 organization delivers superior interleaving, meaning your database queries complete measurably faster because the memory controller can efficiently schedule accesses across two internal banks. Finally, as an unbuffered UDIMM, it combines the cost-effectiveness needed for a small business NAS or file server with the deterministic low latency required for real-time transaction processing. In these scenarios, you gain enterprise-grade stability without the extra expense of registered memory, delivering exactly what a growing client demands: dependable performance that scales with their data.
General Virtualization
Populate memory channels symmetrically using 8GB UDIMM ECC modules to maximize throughput. For a typical dual-socket server with six channels per CPU, install 12 identical sticks (96 GB total) to comfortably support 20–30 standard virtual machines. Leave one-third of slots open for future scaling.
In-Memory Database
In-memory engines demand capacity and data integrity — ECC is non-negotiable. Fill all available slots with these low-voltage 8GB dual-rank DIMMs to reach 64 GB in a single-socket node, providing ample cache for Redis, Memcached, or a small SAP HANA instance. Dual-rank x8 configuration improves command rate and sustained throughput under heavy requests.
High-Performance Computing
HPC workloads prize bandwidth. Install one DIMM per channel to avoid rank-downclock. Eight of these DDR3-1333 modules (64 GB) populate a typical 8-channel node, delivering balanced bandwidth for MPI-based simulation codes. Standardize on identical 8GB UDIMMs to keep memory latency uniform across compute lanes.
Rigorously tested, compatible with Dell PowerEdge T110 II, T20, HP MicroServer Gen8, Lenovo ThinkServer TS140.
Q: Can I mix this M391B1G73AH0-YH9 with other memory modules of different brands or speeds?
A: Mixing different brands or speeds is not recommended for server ECC UDIMMs. It may cause instability or disable ECC functionality. For guaranteed reliability, use identical modules.
Q: Is this memory compatible with my system?
A: Compatibility requires an Intel Xeon E3/E5 or AMD Opteron platform with a server chipset supporting DDR3 ECC Unbuffered DIMMs at 1.35V. Verify your motherboard's Qualified Vendor List.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server board manual. Typically, populate identical DIMMs per channel, starting with the farthest slot from the CPU. For dual rank modules, avoid mixing ranks in the same channel.
Q: Does this module support overclocking or XMP profiles?
A: No, this is a JEDEC-compliant server memory module. It does not support overclocking or XMP profiles. It operates strictly at DDR3-1333 with standard timings for mission-critical stability.
Q: What warranty and typical failure rate can I expect?
A: This module includes a 1-year warranty. It undergoes rigorous testing, resulting in a typical failure rate well below industry average, ensuring reliable long-term server operation.