General

Engineer's Note

This 32GB DDR4-2400 VLP RDIMM with ECC and registered signaling targets dense virtualization and in-memory database deployments in space-constrained 1U servers, leveraging its dual-rank x4 organization for enhanced memory interleaving bandwidth. Hardware error correction combined with the registered command/address bus guarantees end-to-end data integrity and stable operation under heavy, fully populated memory channel loads.

Technical Specs & Insights

1. Registered signal type buffers command and address lines, enabling the deployment of high-density memory configurations without compromising signal integrity in data center servers.
2. ECC error correction detects and corrects single-bit memory errors, preventing silent data corruption in critical enterprise applications and virtualization platforms.
3. Dual Rank x4 organization boosts memory bandwidth via interleaving, sustaining heavy virtual machine workloads and accelerating in-memory database operations.
4. VLP (Very Low Profile) form factor fits into compact 1U server chassis, optimizing thermal airflow and allowing denser node packaging in hyperscale data centers.
5. A 32GB capacity per module maximizes the memory footprint per CPU socket, providing ample headroom for large-scale virtualization and memory-hungry enterprise software suites.

Why These Specs Matter

When deploying dense server environments like virtualization clusters or in-memory databases, every component choice ripples through reliability and performance. The Samsung M392A4K40BM0-CRC0Q, a DDR4-2400 VLP RDIMM, is purpose-built for these exacting workloads, and four distinct characteristics define its value.

First, its Error Correcting Code (ECC) constantly scrubs single-bit errors—a crucial shield against silent data corruption that could crash a hypervisor hosting dozens of virtual machines or poison a financial transaction in Redis. Second, the Registered (RDIMM) signal buffer stabilizes the command bus when populating all 24 DIMM slots of a dual-socket server, letting you safely scale to hundreds of gigabytes for large database caches without signal integrity compromises that cause boot failures. Third, the Very Low Profile (VLP) form factor actively solves a physical pain point: in 1U rack servers or blade nodes, standard-height modules obstruct critical airflow across CPUs, but this module’s reduced height drops into tight spaces, keeping thermal headroom safe and fans from screaming under constant high load. Finally, its dual-rank x4 organization enables rank interleaving, meaning the memory controller can pipeline concurrent read and write operations across ranks. For a virtualized SQL Server or an in-memory analytics platform, this parallelism directly translates to lower latency and higher sustained throughput when multiple tenants hammer the memory bus simultaneously. This is not just a stick of RAM; it is a strategic layer of stability, density, and cooling assurance that keeps your services running without compromise.

Endurance & Reliability

This memory module is a server-class DDR4-2400 VLP RDIMM with ECC and registered signaling, designed for dense, rack-optimized systems. The following capacity-planning guidance covers its best-fit scenarios.

General Virtualization
Populate at least one 32GB DIMM per memory channel to balance density and throughput. In a dual-socket server with eight channels per CPU, installing sixteen modules yields 512GB, supporting high VM consolidation ratios. The very-low-profile form factor maintains airflow in 1U and 2U chassis.

In-Memory Database
Maximize capacity by fully populating all channels with these dual-rank x4 modules to feed large datasets (e.g., Redis, SAP HANA). Configure identical DIMMs across CPU sockets to preserve NUMA locality. Two-socket nodes equipped with 32GB RDIMMs can easily reach 1TB, and the VLP design eases cooling in dense appliances.

High Performance Computing
For bandwidth-sensitive workloads, install one DIMM per channel to exploit balanced memory interleaving and full DDR4-2400 speed. These dual-rank RDIMMs offer a sweet spot between capacity and sustained throughput. Uniform population across all channels prevents NUMA bottlenecks and ensures repeatable run times.

Verified Compatibility

Rigorously tested, compatible with Dell PowerEdge R740, HPE DL380 Gen10, Lenovo SR650, and similar servers.

FAQ