General

Engineer's Note

This 32 GB DDR4-2666 ECC Unbuffered DIMM is an entry‑server‑grade module ideally suited for workstations and small‑scale servers running virtualization, in‑memory databases, or other data‑critical workloads where integrity cannot be compromised. Its dual‑rank x8 organization leverages rank interleaving to improve memory throughput, while full ECC error correction guards against single‑bit corruption at the standard 1.2 V operating voltage.

Technical Specs & Insights

1. Error-Correcting Code protection silently detects and corrects single-bit memory faults, safeguarding critical data integrity for always-on server workloads like ERP and database transactions.
2. A 32GB module density dramatically expands memory headroom per channel, enabling higher virtual machine consolidation without triggering performance-sapping disk swap.
3. Dual Rank x8 layout leverages rank interleaving to keep command pipelines saturated, maximizing effective bandwidth for concurrent analytics and multi-tenant cloud hosting.
4. The unbuffered UDIMM architecture eliminates the register delay inherent in RDIMMs, shaving off crucial nanoseconds for latency-sensitive caching tiers and real-time bidding platforms.
5. DDR4-2666 throughput supplies a steady 21.3 GB/s per DIMM, delivering the sustained data velocity required to feed modern multi-core server CPUs during peak traffic bursts.

Why These Specs Matter

Built as a server-grade ECC UDIMM for small servers and workstations, the Samsung M391A4G43MB1-CTDQY delivers 32GB of reliable memory. In a virtualization cluster, this capacity lets you provision more guest VMs per host without expensive expansion; meanwhile, ECC error correction actively scrubs single-bit flips that could otherwise crash hypervisors or silently corrupt a Redis in-memory dataset, meaning fewer unexplained outages. Its 2666MHz speed and dual-rank x8 organization enable rank interleaving, boosting peak transfer rates so virtual switches and network functions handle packets with noticeably lower jitter. When your database caches terabytes of hot data, the dual-rank architecture sustains higher bandwidth under concurrent reads, accelerating real-time analytics. The 1.2V operation trims power and cooling budgets across a rack of servers, a direct cost saving. For any business relying on uptime and data accuracy, this module transforms fragile compute into a hardened, efficient foundation.

Endurance & Reliability

General Virtualization
This ECC Unbuffered DIMM is ideal for entry-level servers and workstations running hypervisors. Deploy four identical 32 GB modules to populate all memory channels, achieving 128 GB of total capacity while maximizing interleaved bandwidth for multiple VMs. The dual-rank x8 design and ECC protection ensure stable, error-free operation under sustained load.

In-Memory Database
For in-memory databases like Redis or SAP HANA, capacity and data integrity are critical. Fill every available UDIMM slot with these modules—typically reaching 128 GB on a four-slot platform—to hold large datasets entirely in RAM. ECC corrects single-bit errors silently, preventing data corruption in transactional workloads.

High-Performance Computing
HPC applications demand high memory bandwidth per core. Install one module per channel (e.g., four DIMMs for a quad-channel platform) to unlock full channel interleaving, while dual-rank organization boosts command/address pipelining. At DDR4-2666, this configuration delivers predictable throughput and low latency for tightly coupled parallel tasks.

Verified Compatibility

Rigorously tested and compatibility verified for servers: Dell PowerEdge R240, T140, HPE DL20 Gen10, Lenovo ST250.

FAQ