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| Model | M391B1G73QH0-CK000 |
|---|---|
| Compliance Standards | EU RoHS,FCC |
| Product Type | Memory Module |
| Memory Capacity | 8 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 Samsung M391B1G73QH0-CK000 is an unbuffered ECC DDR3 module designed for entry-level servers and workstations where data integrity is critical. Its dual-rank x8 configuration and ECC error correction ensure stable operation in memory-sensitive workloads such as file serving, light virtualization, and NAS applications, while the CL11 latency provides a balanced response for 1600MHz data transfers.
1. Integrated ECC corrects single-bit errors on the fly, fundamentally protecting mission-critical uptime and preventing silent data corruption in always-on server environments.
2. Dual rank organization interleaves memory banks to amplify effective bandwidth, enabling higher virtual machine density without compromising host responsiveness.
3. An 8GB capacity per module offers a cost-effective foundation for populating many slots, scaling total memory headroom gracefully for modest virtualization hosts and small-business servers.
4. 1600MHz clock rate provides consistent throughput for simultaneous database transactions, keeping query latency predictable under sustained enterprise workloads.
5. Unbuffered signal path eliminates register delay, lowering command-to-data access latency in micro-servers and edge nodes where fast deterministic response matters most.
When your server or workstation handles critical workloads, the Samsung M391B1G73QH0-CK000 ECC UDIMM is not just a memory upgrade—it is a safeguard. This DDR3-1600 unbuffered module is purpose-built for entry-level servers and professional workstations where uptime and data integrity are non-negotiable, yet large-scale registered memory is not required. Its ECC capability continuously detects and corrects single-bit errors caused by background radiation or cosmic rays, protecting a financial analyst's running model or a small office's file server from silent data corruption that could corrupt spreadsheets or longitudinal patient records. The unbuffered design keeps command latency low, allowing an engineering workstation performing 24/7 3D rendering to sustain fluid responsiveness without the clock cycle delay of a register. With a dual-rank x8 organization at 1600MHz, the module enables memory interleaving, boosting bandwidth just enough to keep a NAS appliance smoothly serving concurrent backup streams to multiple clients. At a standard 1.5V, it drops into a wide range of Intel Xeon E3 or AMD socket platforms with 240-pin compatibility, translating into a cost-effective path to verified stability rather than gambling with non-ECC memory in an always-on environment.
Server Memory – DDR3 8GB ECC UDIMM (M391B1G73QH0-CK000)
This ECC unbuffered DIMM is designed for entry-level servers and single-socket workstations that require data integrity without the cost of registered memory. Below are capacity planning guidelines for typical enterprise workloads using these 1600MHz CL11 modules.
General Virtualization
For hypervisor hosts running multiple moderate VMs, install four 8GB modules (32GB total) to populate all memory channels. This provides balanced capacity and dual-channel bandwidth for smooth consolidation. Scale to eight modules (64GB) if virtualized database or web servers demand additional headroom, ensuring ECC protection against soft errors.
In-Memory Database
Memory-resident databases like Redis or SAP HANA require maximum reliable capacity. Populate all DIMM slots on the motherboard—for a typical single-socket platform supporting four UDIMMs, install 4x8GB (32GB). If the board supports more slots, fill them completely to reach the platform limit, leveraging ECC to safeguard in-memory data structures. Keep modules identical to maintain signal integrity.
High Performance Computing
HPC benefits from high memory bandwidth. Configure one 8GB module per channel to achieve the full memory interleaving potential. In a quad-channel system, 4x8GB (32GB) delivers optimal throughput for compute-bound tasks. For memory-intensive simulations, double the capacity to 64GB using eight modules, always matching ranks and speeds to avoid performance penalties. ECC ensures calculation accuracy during long run times.
Rigorously tested server memory, compatible with Dell PowerEdge T20, HP MicroServer Gen8, and Lenovo ThinkServer TS140.
Q: Can I mix this M391B1G73QH0-CK000 with other memory modules of different brands or speeds?
A: Mixing is not recommended for server ECC UDIMMs. Different brands or speeds may compromise signal integrity, cause memory errors, or force the entire rank to the slowest common speed, undermining reliability.
Q: Is this memory compatible with my Intel or AMD server platform?
A: This DDR3-1600 ECC UDIMM is compatible with Intel Xeon E3-1200 v2/v3 series and select AMD Opteron platforms requiring 1.5V unbuffered ECC memory. Verify motherboard support for 8GB dual-rank x8 modules.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical DIMMs per memory channel starting with the slot furthest from the CPU. For dual-rank 8GB modules, fill blue slots first, then black, to maintain balanced interleaving and avoid bandwidth penalties.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a JEDEC-compliant server memory module rated at DDR3-1600 CL11. It does not support XMP or overclocking. Stability and data integrity are prioritized over performance tuning in ECC memory.
Q: What warranty and typical failure rate can I expect?
A: This module includes a 1-year warranty. Enterprise-grade DDR3 ECC UDIMMs exhibit an annualized failure rate below 0.5% under normal operating conditions, supported by rigorous component screening and burn-in testing.