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| Model | MT9JSF25672AZ-1G9K1 |
|---|---|
| Product Type | Memory Module |
| Compliance Standards | RoHS |
| Memory Capacity | 2 GB |
| Memory Technology | DDR3 |
| Product Voltage | 1.5V |
| RAM Speed | 1866MHz |
| RAM Standard | DDR3-1866/PC3-14900 |
| Error Identifying | ECC |
| Signal Type | Unbuffered |
| Column Access Strobe (CAS) | CL13 |
| Rank | Single Rank x8 |
| Quantity of Pins | 240-pin |
| RAM Genre | UDIMM |
This 2GB DDR3-1866 ECC Unbuffered DIMM is designed for entry-level servers and single-socket workstations that prioritize data integrity in light virtualization, file serving, or small database workloads. Its single-rank x8 configuration and CL13 latency deliver stable, responsive memory access with ECC error correction to prevent data corruption in always-on environments.
1. ECC protection silently corrects single-bit errors, safeguarding financial transactions and critical databases from in-memory corruption.
2. 1866MHz speed delivers the steady memory bandwidth needed to keep latency-sensitive enterprise workloads responsive under moderate concurrency.
3. Unbuffered signal path reduces access latency, benefiting lightweight bare-metal hypervisors and edge computing nodes where every nanosecond counts.
4. 2GB capacity provides a perfectly sized footprint for dedicated network appliances and management controllers, enhancing deployment density without wasted resources.
5. Single Rank x8 organization lowers electrical loading on the memory bus, improving signal integrity and thermal headroom in dense microserver clusters.
The MT9JSF25672AZ-1G9K1 is a server-grade DDR3 Unbuffered ECC UDIMM, engineered for single-socket workstations and entry-level servers where data integrity and cost-effective reliability are non-negotiable. Its four defining characteristics directly address the real-world pressures of virtualization clusters and in-memory databases.
First, the ECC error correction actively prevents single-bit memory errors from silently corrupting transactional data. In a Redis or memcached cluster, a flipped bit in a cache node can cascade into application logic errors or crashed services; ECC eliminates this hidden risk, keeping your in-memory store deterministic and trustworthy. Second, the 1866MHz speed and PC3-14900 bandwidth ensure that multiple VMs under a hypervisor like VMware ESXi run without memory bottlenecks—critical when a single host consolidates eight to ten small virtualized workloads, each demanding low-latency access. Third, the Unbuffered architecture, combined with Single Rank x8 organization, delivers lower electrical loading and shorter command latencies than Registered alternatives, which translates to a 3–5% performance uplift in lightly threaded database lookups. Fourth, the standard 1.5V operating voltage keeps thermal design simple inside compact 1U enclosures, avoiding heat-related throttling during continuous operation. Together, these traits give you uncompromised uptime and responsive performance where it matters most.
General Virtualization
For lightweight virtualization hosts, these 2GB ECC UDIMMs are usable only in large numbers due to their small capacity. Populate all available DIMM slots—typically 4 or 6—to achieve a minimum of 8–12 GB, which supports a few modest VMs, but plan for a future migration to 8GB modules since DDR3 platforms are aging and memory overcommitment risks swapping on hypervisors like ESXi or Proxmox.
In-Memory Database
In-memory databases like Redis or Memcached demand both capacity and data integrity, making ECC essential. However, a single 2GB DIMM is far too small for production caching workloads; you would need to fully populate a dual-socket server with 12–24 modules to reach 24–48 GB, sacrificing density and power efficiency. Strongly consider replacing these with higher-capacity 8GB or 16GB ECC UDIMMs to reduce slot usage and improve latency-sensitive throughput.
HPC
HPC clusters often prioritize memory bandwidth and correctness over raw capacity per core. With 2GB single-rank x8 modules, you can equip each node with one DIMM per channel— typically 6 or 8 modules per CPU—to maximize interleaved bandwidth for MPI-based simulations. This configuration works for embarrassingly parallel, memory-light jobs, but modern HPC applications frequently need 4–8 GB per core, so these modules are best suited for test beds or I/O nodes rather than primary compute.
Rigorously tested server memory, compatible with Dell PowerEdge T20/R220, HP ProLiant MicroServer Gen8, Lenovo TS140.
Q: Can I mix this MT9JSF25672AZ-1G9K1 with other memory modules of different brands or speeds?
A: Mixing with other brands or speeds is not recommended for server environments. For reliable ECC operation, use identical modules matching speed, rank, and voltage. Mismatched DIMMs may cause instability or errors.
Q: Is this memory compatible with my system?
A: This DDR3-1866 ECC Unbuffered DIMM targets entry-level servers supporting UDIMM ECC, such as Intel Xeon E3-1200 v2/v3 or AMD Opteron 3300 series. Always verify your board's QVL before purchasing.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server motherboard manual. Typically, populate the slot farthest from the CPU in each channel first. For a single 2GB module, install it in the primary slot (often labeled DIMM1_A).
Q: Does this module support overclocking or XMP profiles?
A: No. This is a JEDEC-standard server memory module without XMP or overclocking support. It operates fixed at 1866MHz CL13 to ensure maximum stability and data integrity under continuous workloads.
Q: What warranty and typical failure rate can I expect?
A: This Micron module carries a 1-year warranty. Through strict production testing, it achieves an annualized failure rate (AFR) typically below 0.5%, delivering high reliability for always-on server operations.