General

Engineer's Note

This Samsung M393A4G43BB4-CWEC0 is a 32GB DDR4-3200 Registered ECC RDIMM purpose-built for server platforms, delivering critical data integrity for memory-intensive workloads such as virtualization and in-memory databases. Its dual-rank x8 configuration with CL22 latency leverages rank interleaving to boost effective bandwidth while the registered signal architecture ensures stable operation across high-density memory channels.

Technical Specs & Insights

1. ECC error correction tirelessly hunts down single-bit memory faults in the background, preserving transactional integrity for financial databases and preventing silent data corruption during years of non-stop operation.
2. Registered signal buffering decouples electrical loading from the memory controller, letting system architects fully populate massive DIMM slots without compromising stability in virtualized server farms.
3. A 32GB capacity per stick triples the memory footprint of typical node configurations, allowing dense VM consolidation and heavy in-memory analytics to run on fewer physical servers.
4. Dual rank x8 organization uses interleaving across internal banks to sustain higher effective throughput, ensuring that multi-tenant workloads and real-time AI inference get consistent memory bandwidth under pressure.
5. DDR4-3200 speed translates to a peak of 25.6 GB/s per module, slashing memory access latency for content delivery clusters and high-frequency trading platforms where microseconds matter.

Why These Specs Matter

The Samsung M393A4G43BB4-CWEC0 is a server-grade DDR4 RDIMM engineered to eliminate the kinds of failures that keep data center managers awake at night. In a virtualized cluster hosting dozens of business-critical VMs, ECC technology actively corrects single-bit errors caused by cosmic radiation or electronic noise, directly preventing silent data corruption that could crash a transactional database without warning. The Registered buffer isolates the memory controller from excessive electrical loads, meaning a single hypervisor can reliably populate 512 GB or more across 16 or 24 DIMM slots without signal degradation—vital when consolidating workloads to reduce server sprawl. Its Dual Rank x8 organization overlaps internal accesses across two independent rank arrays, delivering the sustained bandwidth and low-latency interleaving that in-memory databases like SAP HANA demand during real-time analytics runs. Finally, the 3200 MT/s speed with CL22 latency strikes a deliberate balance: it pumps sufficient throughput to feed CPU cores without introducing the signal instability that aggressive overclocking would cause at scale. For you, this translates into higher VM density per host, zero unexplained application errors, and predictable performance when your customer-facing services cannot tolerate even a millisecond of hesitation.

Endurance & Reliability

General Virtualization
Deploy this 32GB DDR4-3200 RDIMM in balanced sets across all memory channels to maximize bandwidth for dense VM workloads. For a dual-socket server with eight channels per CPU, populate eight identical modules (256GB total) per node to avoid performance penalties from unbalanced configurations. The Registered ECC design ensures stability under mixed, memory-intensive virtual machines.

In-Memory Database
Leverage the Dual Rank x8 organization to boost interleaving and throughput for low-latency datasets. Install two DIMMs per channel (2DPC) to reach capacities like 512GB or 1TB while keeping the memory bus at 2933 MT/s if the platform imposes a speed drop—CL22 latency still provides predictable response times. ECC protection guards against single-bit errors in critical transactional data.

High-Performance Computing
Fill every memory channel with identical 32GB RDIMMs to saturate peak bandwidth for simulation and modeling codes that are sensitive to memory throughput. A typical dual-processor node with 16 total channels can host 512GB using sixteen modules, keeping all ranks populated for optimal parallel access. The 1.2V operating voltage and registered signaling support large DIMM counts without signal integrity loss, essential for long-running parallel jobs.

Verified Compatibility

Rigorously tested, compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2.

FAQ