General

Engineer's Note

This DDR3-1333 ECC Unbuffered DIMM is purpose-built for entry-level servers and small-business workstations, ensuring critical data integrity in light virtualization and memory-sensitive workloads. Its dual-rank x8 organization boosts interleaved memory throughput, while the 1.35V low-voltage operation and CL9 latency maintain energy-efficient, stable error correction.

Technical Specs & Insights

1. ECC protection silently corrects single-bit memory errors, safeguarding data integrity for entry-level servers and workstations that handle financial records or critical small-business databases.
2. Low-voltage 1.35V operation cuts energy draw and thermal stress in always-on microserver deployments, directly lowering cooling overhead in dense rack environments.
3. A four-gigabyte capacity suits lightweight virtualization hosts or dedicated appliance roles, keeping memory provisioning lean and cost-efficient for single-purpose Linux containers.
4. Dual Rank x8 organization alternates between internal rank groups, maximizing bank-level parallelism so memory bandwidth holds steady under multiple concurrent requests from a hypervisor.
5. The 1333 mega-transfers-per-second data rate delivers predictable throughput for legacy enterprise applications, avoiding I/O stalls when modest transactional workloads spike.

Why These Specs Matter

As a server memory module, the MT18KSF51272AZ-1G4M1ZE is a 4GB DDR3-1333 ECC Unbuffered DIMM built for entry-level servers. Its four defining characteristics directly address real operational headaches. First, Error-Correcting Code (ECC) eliminates silent data corruption, a critical safeguard when running a virtualized cluster or an in-memory database like Redis where a bit-flip can crash VMs or corrupt analytics. Second, the low 1.35V operating voltage reduces power consumption and heat, cutting electricity costs and improving long-term reliability in always-on microserver deployments. Third, the dual-rank x8 organization interleaves memory banks to uplift bandwidth, smoothing performance when multiple VMs compete for resources. Finally, the DDR3-1333 speed with CL9 latency strikes an optimal balance between responsiveness and affordability, keeping your database query times swift without overspending. Together, they make this module the dependable backbone for cost-conscious IT teams running virtualized environments and memory-intensive applications.

Endurance & Reliability

General Virtualization
For lightweight virtualized environments, install four matched 4 GB UDIMMs across all memory channels to achieve a balanced 16 GB pool while avoiding channel contention. This ECC, low-voltage (1.35V) memory safeguards guest state, making it ideal for hosting 3–4 small VMs. Scale to eight modules (32 GB) to handle moderate consolidation without resorting to disk swap.

In-Memory Database
Populate every available slot with these dual-rank x8 UDIMMs to maximize capacity while preserving ECC protection for data integrity. A 64 GB configuration (sixteen modules) can support small Redis or Memcached datasets entirely in RAM, and the uniform dual-rank structure improves bank-level parallelism. Keep the modules identical to maintain stable command timing under sustained in-memory workloads.

High-Performance Computing
Achieve peak memory bandwidth by installing one 4 GB module per channel in a multi-channel server, ensuring symmetric interleaving for floating-point throughput. A common eight-module, 32 GB layout leverages the dual-rank design to deliver responsive pre-fetching for MPI tasks. The 1.35V UDIMMs reduce thermal stress in dense node clusters, benefiting reliability during long-running simulations.

Verified Compatibility

Our rigorously tested DDR3 ECC UDIMM fits servers like Dell PowerEdge R210 II, HP ProLiant MicroServer Gen8, Lenovo ThinkServer TS140.

FAQ