General

Engineer's Note

This DDR4-2400 ECC Unbuffered UDIMM is a server-grade module purpose-built for entry-level servers and single-socket workstations running virtualization, file/print services, or light database tasks. Its single-rank x8 configuration ensures low electrical loading for improved signal integrity, while the ECC engine silently corrects single-bit errors in real time to guarantee data integrity in critical always-on environments.

Technical Specs & Insights

1. ECC memory actively detects and corrects single-bit errors, preventing silent data corruption that could crash critical financial transactions or compromise long-running scientific computations in a server.
2. 4 GB capacity is precisely matched to lightweight virtualized network appliances and containerized microservices, maximizing consolidation density without over-provisioning costly resources.
3. Unbuffered signal type eliminates the register chip delay, granting entry-level servers lower memory access latency essential for fast database indexing and rapid API responses.
4. 2400 MHz data rate supplies ample per-channel bandwidth for multiple simultaneous clients on a small business file server, keeping remote file transfers responsive under peak concurrency.
5. CL17 column access timing balances stability and speed, delivering predictable performance in always-on monitoring servers where every millisecond of alert processing counts.

Why These Specs Matter

Built for entry-level servers and workstations where every computation counts, the Micron MTA9ASF51272AZ-2G3B1 is a 4GB DDR4-2400 UDIMM that turns four critical engineering choices into real-world reliability. Its ECC technology is not just a feature—it is your first line of defense against silent data corruption. In a small accounting firm running a financial database on a single-socket server, a single-bit error caused by background radiation can quietly flip a decimal place in a tax record. ECC detection and correction prevents such costly, invisible mistakes, keeping audits and transactions accurate without ever disturbing end users.

Equally vital is the module’s 1.2V operating voltage. When you deploy a 24/7 virtualization host for lightweight containers or a network-attached storage device tucked into a back office, every watt of heat demands additional cooling and shortens component lifespan. Lower voltage directly reduces thermal stress and long-term energy bills, allowing passive cooling in compact micro-server chassis without throttling. The unbuffered design complements this efficiency by removing the register latency found in registered DIMMs, which is a meaningful advantage in latency-sensitive workloads like an in-memory Redis cache powering a real-time customer portal. Single-rank x8 organization further improves signal integrity and bus speed, ensuring the 2400MT/s clock and CL17 timing stay predictable under load. For the IT manager refreshing ageing productivity servers or the fabricator upgrading a render node that batch-processes through the night, this module means stable, bit-perfect data and lower operating cost—no surprises, just quiet dependability.

Endurance & Reliability

General Virtualization
For general virtualization using this 4 GB DDR4-2400 ECC UDIMM, populate all available memory channels with identical modules to maximize capacity while maintaining balanced access. A dual-socket server with eight DIMM slots per CPU benefits from 16 modules (64 GB total), supporting a moderate density of light to medium VMs. Avoid mixing different ranks or latencies to prevent performance inconsistencies in hypervisor-managed memory pools.

In-Memory Database
In-memory databases demand large, contiguous memory spaces, so deploy the maximum supported number of these 4 GB sticks—commonly 24 or more across all channels—to reach 96 GB or higher. Given the single-rank x8 organization, latency-sensitive workloads like Redis or SAP HANA will see predictable CL17 timing, but consider the capacity limit per socket; this configuration suits departmental or test instances rather than multi-terabyte production nodes.

High-Performance Computing
For HPC, bandwidth is critical: fill every memory channel with one 4 GB ECC UDIMM (e.g., eight modules on an eight-channel platform) to enable full channel interleaving and peak throughput. The unbuffered design reduces latency per access, which benefits tightly coupled MPI applications, though total capacity remains modest. Supplement with NVMe swaps for scratch data if job memory footprints exceed physical RAM, and ensure cooling for dense module populations under sustained load.

Verified Compatibility

Rigorously tested server memory, compatible with Dell PowerEdge T140, Lenovo ThinkSystem ST50, HPE ProLiant DL20 Gen10.

FAQ