General

Engineer's Note

Designed for server and enterprise environments, this Samsung 16GB DDR4-2400 Registered ECC RDIMM (M393A2K40BB1-CRC0Y) ensures data integrity and system stability under continuous operation, making it ideal for virtualization clusters, in-memory databases, and mission-critical workloads. Its single-rank x4 organization with CL17 latency optimizes signal integrity and memory bus efficiency, while the 1.2V operating voltage and registered architecture enhance power efficiency and allow higher memory densities in rack and tower servers.

Technical Specs & Insights

1. Registered DIMM architecture buffers command and address lines, ensuring signal integrity across fully populated 288-pin server boards so memory-intensive virtualized workloads run without instability.
2. ECC protection detects and corrects single-bit errors on the fly, eliminating silent data corruption that could compromise transactional databases or financial audit logs.
3. Single Rank x4 organization maximizes channel interleaving efficiency, delivering consistent low-latency access for in-memory analytics and high-frequency trading applications.
4. 16GB capacity per module provides sufficient density to provision dozens of additional VMs or containers per host, optimizing consolidation ratios without immediate hardware upgrades.
5. 1.2V low-voltage operation drives down per-DIMM power consumption, directly cutting cooling demands and energy bills in hyperscale data center deployments.

Why These Specs Matter

When your data center relies on hundreds of virtual machines or an in-memory database processing millions of transactions, the M393A2K40BB1-CRC0Y proves that server memory is never just a capacity figure. This 16GB DDR4 RDIMM runs at 1.2V, immediately reducing thermal load and power costs across a full rack while maintaining 2400MHz stability. Its ECC technology silently corrects single-bit errors before they corrupt financial records or customer data, a non-negotiable defense against cosmic-ray-induced bit flips that standard desktop memory simply ignores. The registered signal type buffers command and address lines, letting you populate all channels with four or more modules per CPU without signal degradation, which keeps a virtualized cluster scaling smoothly as you spin up more nodes. With single-rank x4 organization and CL17 latency, it balances raw bandwidth and fast access for read-heavy caches like Redis or Memcached, preventing latency tails that degrade user experience. In a consolidation-heavy environment where uptime defines revenue, every onboard design choice turns potential silent failures into predictable resilience, so your DBaaS platform stays responsive under peak load.

Endurance & Reliability

General Virtualization
For a balanced virtualized host, a common starting point is six to eight of these 16 GB RDIMMs, populating one DIMM per memory channel across the available channels to maximize bandwidth. This yields 96–128 GB of registered ECC memory, comfortably supporting moderate VM densities. Avoid mixing dissimilar ranks or speeds in the same channel, and leave half the slots free for future scale‑out without sacrificing dual‑channel or higher interleaving.

In-Memory Database
In-memory databases demand both high capacity and low latency under constant loads. Populate all memory channels with two of these single‑rank x4 16 GB RDIMMs per channel (2DPC) if supported, achieving 256 GB or more per CPU while maintaining acceptable speed grades. Because the modules are registered and run at 2400 MHz with CL17 latency, they deliver the deterministic response required for real‑time analytics; ensure the BIOS enforces 1.2 V and disables any power‑saving features that could add jitter.

High-Performance Computing (HPC)
HPC clusters typically favor maximum memory bandwidth over sheer capacity. Deploy one 16 GB RDIMM per channel, placing identical modules across all channels to enable full‑speed interleaving and the lowest access latency. With these DDR4‑2400 registered DIMMs, an 8‑channel platform provides 128 GB while sustaining near‑peak 19.2 GB/s per channel, which benefits bandwidth‑sensitive simulation codes. If node memory footprint grows, upgrade to higher‑capacity modules rather than filling the second slot per channel, as 2DPC can force the memory controller to downshift its frequency.

Verified Compatibility

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

FAQ