General

Engineer's Note

This 32GB VLP RDIMM leverages a Dual Rank x4 organization and ECC to maximize memory density and data integrity for dense server deployments in virtualization and in-memory database workloads. Its low 1.2V DDR4-2400 operation and Registered signal type ensure stable, power-efficient buffering, reducing electrical load on the memory controller in 1U and 2U rack servers.

Technical Specs & Insights

1. ECC protection actively corrects single-bit memory errors in real time, preventing data corruption and unplanned downtime in financial transaction processing and critical database operations.

2. Registered signal type buffers command and address lines, allowing dense server memory populations to scale without sacrificing signal integrity under heavy multi-rank loads.

3. Dual Rank x4 organization interleaves access across internal banks, keeping memory channels saturated and delivering predictable low-latency throughput for consolidated virtualization hosts.

4. A generous per-module capacity floor empowers high-density server deployments, maximizing the number of virtual machines per node without resorting to costly ultra-large DIMMs.

5. The PC4-19200 throughput ceiling supplies sufficient bandwidth to saturate modern server processors' memory controllers, accelerating in-memory analytics and large-scale content serving.

Why These Specs Matter

The Samsung M392A4K40BM0-CRC is a server-grade DDR4 VLP RDIMM, and every design choice here directly confronts the realities of modern data center operation. Its ECC capability is not just a checkbox; in a virtualized cluster running dozens of VMs, a single undetected bit flip in memory can corrupt a hypervisor page table or a financial transaction in an in-memory database, leading to silent data corruption that cascades into costly outages. Here, ECC means your transactional integrity is not left to chance. The Registered (buffered) architecture takes that reliability further, stabilizing command and address signals so you can populate all 24 DIMM slots on a dual-socket board without signal degradation, achieving the massive 768 GB or more per node that dense virtualization and container farms demand. The dual-rank x4 organization unlocks a practical performance benefit: rank interleaving allows the memory controller to initiate a read on one rank while the other completes a cycle, measurably cutting effective latency for memory-bound analytics platforms like SAP HANA. Finally, the VLP (Very Low Profile) form factor is critical in 1U and 2U rack servers where airflow is tight; reduced module height permits unobstructed cooling across tightly packed DIMMs, preventing thermal throttling during sustained database query loads. This module transforms raw specs into operational resilience and consistent data throughput exactly where downtime is not an option.

Endurance & Reliability

General Virtualization
For dense virtualization hosts, this 32GB DDR4-2400 ECC Registered VLP RDIMM provides reliability and low power. Deploy a minimum of four modules (128GB total) in a dual-socket server with six or eight memory channels to balance capacity and memory bandwidth for 20–30 light to medium VMs. If VM density demands more memory headroom, populate all channels with one DIMM per channel to maintain 1DPC speed while reaching 256GB using eight identical modules.

In-Memory Database
In-memory databases like Redis or SAP HANA demand absolute data integrity and high capacity. Use six or eight of these 32GB RDIMMs (192–256GB) in a balanced memory configuration across all CPU memory channels to maximise throughput and avoid NUMA penalties. The dual-rank x4 design and CL17 latency ensure low access times, while ECC protects in-flight data. For datasets beyond 256GB, scale to 16 DIMMs on a dual-socket board to deliver 512GB, keeping a strict 1DPC rule for optimal speed.

High-Performance Computing
HPC applications require both capacity and sustained bandwidth. Populate eight DIMM slots per socket (one 32GB module per channel) on a dual-socket node to achieve 256GB total capacity and peak memory bandwidth—critical for CFD, weather modeling, and genomic workloads. The VLP form factor improves airflow in dense rack servers, while Registered ECC signal integrity supports running all channels without frequency drop. For extreme scale-out clusters, upgrading to sixteen modules (512GB per node) can fully utilise dual-rank interleaving and keep large grid jobs in memory.

Verified Compatibility

Rigorously tested for servers: compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, and more.

FAQ