General

Engineer's Note

This DDR3-1066 UDIMM with ECC is engineered for entry-level servers and professional workstations, where unbuffered signal integrity and dual-rank x8 organization deliver reliable performance and improved memory interleaving for light virtualization and data-integrity workloads. Its CL7 low latency and hardware error correction ensure responsive, stable operation in single-socket platforms that demand cost-effective data protection without the overhead of registered memory.

Technical Specs & Insights

1. Error-correcting code memory detects and corrects single-bit data corruption, preserving data integrity in always-on server environments.
2. Unbuffered signal architecture reduces memory access latency, ideal for entry-level servers where every CPU cycle counts.
3. Dual rank organization enables rank interleaving, boosting effective memory bandwidth for multitasking services and virtualized workloads.
4. CAS 7 latency shortens the delay between memory requests and data delivery, accelerating response times for latency-sensitive server applications.
5. Two-gigabyte density provides a cost-effective, low-power memory footprint for dedicated microservers and embedded network appliances.

Why These Specs Matter

The Micron MT18JSF25672AZ-1G1 is an unbuffered ECC DDR3 memory module purpose‑built for entry‑level servers and workstations where absolute data integrity and cost‑effective reliability are non‑negotiable. Its ECC engine actively corrects single‑bit memory errors in real time—a critical safeguard when you run a lightweight virtualization host for branch‑office services or a small business domain controller, preventing a silent bit flip from corrupting Active Directory records or bringing down guest VMs overnight.

The module’s dual‑rank x8 organization enables rank interleaving, which hides refresh latency and boosts sustained bandwidth. This translates directly into snappier response times for an in‑memory database like Redis or a write‑heavy MySQL instance, where every microsecond of latency savings compounds into tangible user‑facing performance. With a CAS latency of just 7 cycles, this DIMM further reduces the gap between a CPU request and the data being ready, which is especially valuable in single‑socket tower servers handling concurrent financial transactions.

As a 240‑pin UDIMM, it slots directly into cost‑conscious platforms that do not require registered memory, keeping platform power and acquisition costs low while still delivering the error‑free operation that your critical applications demand.

Endurance & Reliability

General Virtualization
For light virtualization hosts using these 2 GB ECC UDIMMs, populate all memory channels symmetrically to maintain balanced memory access. A minimal configuration would use eight modules (16 GB total) spread across four channels, providing just enough capacity for a few low‑resource virtual machines. Always enable ECC to protect guest data integrity.

In‑Memory Database
In‑memory databases demand the largest possible reliable capacity. Fill every available DIMM slot with these 2 GB modules to reach the server platform’s maximum—for example, 12 slots yielding 24 GB on a single‑socket board. While only suitable for small datasets, the unbuffered ECC design guards against bit errors that would corrupt in‑memory tables and indexes.

HPC
High‑performance computing requires maximum memory bandwidth. Install these dual‑rank x8 DIMMs in identical pairs across all memory channels (one or two per channel) to enable full interleaving. A balanced configuration using six to eight modules (12–16 GB) ensures consistent throughput for MPI‑parallel workloads, and ECC prevents silent data corruption during long‑running simulations.

Verified Compatibility

Rigorously tested, compatible with Dell PowerEdge R210 II, T110 II, HP ML110 G7, and similar DDR3 ECC UDIMM servers.

FAQ