General

Engineer's Note

This unbuffered ECC UDIMM with a dual-rank x8 organization is tailored for entry-level servers and small business NAS or workstation platforms where data integrity is critical, leveraging error-correcting code to detect and correct single-bit errors while the dual-rank configuration improves interleaving for steady throughput in memory-intensive tasks. Its DDR3-1333 CL9 timing and 1.5V standard voltage ensure broad compatibility and reliable operation in micro servers and value-oriented rack systems running lightweight virtualization or file services.

Technical Specs & Insights

1. ECC protection silently corrects single-bit memory errors, ensuring data integrity for financial transactions or virtualized workloads in a small business server.
2. Unbuffered design keeps command-to-data latency minimal for micro-server applications, providing a responsive platform for lightweight web hosting and caching.
3. Four gigabytes of capacity supplies adequate memory for dedicated entry-level server roles such as DNS or firewall appliances without over-provisioning cost.
4. The thirteen-hundred mega transfers per second speed delivers balanced throughput for DDR3-era server boards, sustaining stable packet processing under moderate network loads.
5. Dual-rank organization interleaves memory accesses to boost bandwidth efficiency, enhancing multi-threaded application performance in constrained server environments.

Why These Specs Matter

Identifying your memory module by its specifications, the ECC Unbuffered DIMM design, 240-pin layout, and server-grade integrity features confirm it is built for entry-level servers and workstations, not standard desktops or notebooks. For IT administrators managing a virtualized environment, the ECC capability is critical. When you run multiple virtual machines on a hypervisor, a single background radiation-triggered bit-flip in non-ECC RAM can silently corrupt guest operating systems, cause data loss, or crash the entire host. This module corrects single-bit errors in real time, directly preserving the uptime of your virtualized services and protecting your business from hard-to-diagnose instability. The Dual Rank x8 organization further enhances real-world performance under heavy loads. In an in-memory database or caching server like Redis, this rank interleaving allows the memory controller to pipeline commands more efficiently, reducing latency and improving transaction throughput when your application queries thousands of records per second. Each 4GB stick runs at a reliable 1.5V standard, and while registered memory is not present, the unbuffered architecture keeps access latency low, which benefits latency-sensitive financial calculations or content management systems. Together, these characteristics mean you can consolidate workloads on a cost-effective single-socket server without sacrificing data integrity or the responsive speed your users demand.

Endurance & Reliability

General Virtualization
For modest virtualization hosts using ECC UDIMMs, populate all available channels with identical 4 GB modules to enable memory interleaving and maximize bandwidth. Aim for at least 32 GB total in a balanced configuration — eight modules on a dual-socket platform — to comfortably run a mix of lightweight VMs, while ECC guards against in-memory data corruption.

In-Memory Database
Latency-sensitive in-memory databases benefit from the lowest possible CAS latency, and these CL9 modules are a reasonable fit for small-scale caching or Redis instances. Because capacity directly limits dataset size, fill every slot with 4 GB UDIMMs to reach the board’s maximum (often 32 GB on entry-level servers); however, for production workloads exceeding that footprint, consider migrating to a platform that supports larger registered DIMMs.

High-Performance Computing
In HPC clusters where memory bandwidth per core matters, install six or eight identical 4 GB ECC UDIMMs per node to saturate triple- or quad-channel architectures. The 1.5 V DDR3-1333 standard keeps power per module predictable, and ECC is essential for long-running simulations to prevent silent data errors. Stay within the affordable 32–64 GB range per node, then scale horizontally across nodes rather than pushing single-node capacity.

Verified Compatibility

Proven through rigorous testing, this DDR3 ECC UDIMM works with Dell PowerEdge T20, HP MicroServer Gen8, Lenovo ThinkServer TS140.

FAQ