General

Engineer's Note

Designed for server platforms, this 32GB DDR4-3200 RDIMM with ECC and registered signaling is ideal for memory-intensive workloads such as virtualization, in-memory databases, and mission-critical enterprise applications where data integrity is paramount. Its dual-rank x4 organization and CL22 latency provide a balance of high bandwidth and efficient command scheduling, while the registered architecture ensures signal stability across fully populated memory channels.

Technical Specs & Insights

1. 32GB capacity per module doubles the memory footprint in standard server slots, allowing significantly higher virtual machine density without expanding hardware footprint.
2. ECC protection neutralizes single-bit errors in real time, safeguarding transactional integrity for databases and financial processing under 24/7 operation.
3. Registered clock driver stabilizes command and address signals across heavily loaded channels, eliminating data loss risks in fully populated multi-DIMM enterprise servers.
4. Dual rank x4 organization interleaves bank groups to sustain peak bandwidth under concurrent access, delivering consistent throughput for virtualization and in-memory analytics.
5. 3200MT/s transfer rate shrinks the latency gap between processor and memory, accelerating large dataset computations in AI inference and cloud-native workloads.

Why These Specs Matter

DDR4 RDIMMs like the Samsung M393A4K40DB3-CWEGQ are purpose‑built for servers, where downtime is measured in revenue and data integrity is non‑negotiable. The ECC technology silently detects and corrects single‑bit memory errors caused by cosmic radiation or electrical noise. In a virtualized cluster hosting dozens of VMs, an uncorrected bit flip can corrupt a hypervisor page table and crash every tenant simultaneously; ECC turns that catastrophic risk into a non‑event, safeguarding multi‑tenant uptime. The registered signal buffer decouples the memory bus from the DRAM chips, allowing a single server to populate 24 or more DIMM slots without signal degradation. For an in‑memory database like SAP HANA that demands terabytes of reliable capacity, this means you can scale fearlessly and keep massive datasets instantly accessible. Meanwhile, the dual‑rank x4 organization interleaves two internal ranks of DRAM banks, overlapping precharge and access cycles to deliver measurably higher sustained bandwidth than single‑rank modules. Under the relentless concurrency of thousands of OLTP transactions per second, a dual‑rank design reduces latency tails and prevents the memory subsystem from becoming the bottleneck. Paired with 3200 MT/s operation at a lean 1.2 V, this module delivers the bandwidth headroom and power efficiency essential for dense rack deployments where every watt translates directly into operating cost.

Endurance & Reliability

General Virtualization
Deploy six or eight of these 32GB RDIMMs across balanced memory channels in a dual-socket server to achieve 192–256GB capacity, fully utilizing interleaving for optimal throughput. For high-density VM hosts, populate all available DIMM slots—typically 16 modules per node—to reach 512GB, ensuring ample headroom for memory overcommitment without swapping to storage.

In-Memory Database
Equip each node with a full set of 16 modules (512GB total) to hold entire datasets in RAM and eliminate storage bottlenecks. The dual-rank x4 organization and registered signalling provide the low latency and reliability required for synchronous replication and large in-memory tables. Reserve additional slots for future scaling, as in-memory workloads often demand rapid capacity expansion.

High-Performance Computing
Install one module per channel across all available memory channels—commonly eight per socket—to maximize memory bandwidth for bandwidth-sensitive parallel simulations. This 3200MT/s ECC RDIMM keeps memory transactions stable under sustained load, while 32GB per channel delivers a strong balance between capacity and cost per compute node. Select fully buffered population to avoid bandwidth penalties from empty channels.

Verified Compatibility

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

FAQ