General

Engineer's Note

The Samsung M393A2K43DB3-CWEC0 is a 16GB DDR4-3200 registered ECC memory module engineered for server platforms, delivering uncompromising data integrity in virtualized environments, in-memory databases, and mission-critical workloads. Its dual-rank x8 organization combined with CL22 latency and registered signal buffering ensures stable, high-bandwidth operation under sustained heavy loads.

Technical Specs & Insights

1. ECC silently corrects single-bit errors in real time, preserving data integrity for financial transactions and long-running analytics without application interruption.
2. Registered buffering stabilizes command and address signals across fully loaded memory channels, essential for scaling up rack server capacity without signal degradation.
3. Dual Rank x8 organization maximizes bank-level interleaving, keeping throughput high even when virtualized environments aggressively consolidate workloads.
4. Fast data rate ensures modern multi-core server processors stay fed with bandwidth, cutting query latencies in caching and real-time decision engines.
5. Ample module capacity supports greater virtual machine density per server, directly reducing infrastructure footprint and operational overhead in cloud deployments.

Why These Specs Matter

The M393A2K43DB3-CWEC0 is a 16GB DDR4-3200 Registered ECC DIMM purpose-built for server platforms, where data fidelity and relentless uptime are not just goals but requirements. For a virtualized cluster running VMware ESXi, ECC memory is your silent guardian. A cosmic ray or electrical noise can flip a single bit inside a VM, silently corrupting transactional data or bringing down a revenue-critical application; the ECC on this module detects and corrects those errors in real time, turning a potential outage into a non-event and preserving data integrity at the silicon level. Registered architecture makes dense population feasible: by buffering command and address signals, it stabilizes signals across all 24 DIMM slots, so your virtualization host can scale to support dozens of VMs without signal degradation. Its dual-rank x8 design then steps in for performance. Through bank interleaving, the memory controller can read and write data across internal banks in parallel, dramatically reducing latency when an in-memory database like SAP HANA or Redis is bombarded with concurrent queries. Backed by a power-efficient 1.2V profile and a fast 3200MT/s transfer rate, this module directly translates into higher transactions per second and safer virtualized environments, making it a strategic asset for any enterprise data center.

Endurance & Reliability

General Virtualization
For DDR4-3200 RDIMMs like this 16GB module, populate balanced channels to maximize memory bandwidth under multi-VM loads. Deploy six or eight identical DIMMs per CPU in a 2-socket server to reach 96–128 GB, aligning vCPU-to-memory ratios for typical virtual machine density. Leave empty slots to enable future scale-out without replacing existing assets.

In-Memory Database
In-memory databases demand capacity and error resilience, making ECC Registered DIMMs essential. Install at least twelve 16GB RDIMMs for a 192 GB pool, configuring 2 DIMMs per channel to sustain dual-rank interleaving. Distribute ranks evenly across memory controllers to preserve low-latency access and guard against uncorrectable errors in production-critical datasets.

High-Performance Computing
HPC clusters benefit from the high reliability and stable 3200 MT/s signaling of RDIMMs. Populate all eight channels per socket with one DIMM each initially, delivering 128 GB for moderate-scale simulations. For memory-bound workloads, upgrade to two DIMMs per channel while monitoring thermal limits, and use identical dual-rank x8 modules to maintain peak bandwidth under sustained parallel I/O.

Verified Compatibility

Rigorously tested for servers: Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3, and more.

FAQ