General

Engineer's Note

Designed as a DDR3-1600 registered ECC memory module, the M393B5273EB0-CK0 is a server-grade RDIMM optimized for legacy enterprise platforms running virtualization, in-memory databases, or other mission-critical workloads where data integrity is non-negotiable. Its dual-rank x8 organization and registered signal topology ensure stable operation at full population across multiple DIMM slots, while ECC reliably corrects single-bit errors to prevent silent data corruption.

Technical Specs & Insights

1. ECC error correction proactively detects and repairs single-bit memory faults, preserving transactional integrity and preventing silent data corruption in mission-critical database servers.
2. Registered signal buffering stabilizes command and address lines under high DIMM counts, which enables denser memory configurations without sacrificing reliability in large-scale virtualization hosts.
3. Dual Rank x8 organization leverages rank interleaving to keep server memory channels fully utilized, significantly improving effective bandwidth during concurrent virtual machine bursts.
4. 1600MHz operation delivers consistent per-channel throughput, ensuring legacy enterprise workloads and multi-tenant hosting environments never starve for memory bandwidth.
5. A compact 4GB capacity allows fine-grained, right-sized memory allocation, helping operators maximize container or VM density per rack unit while controlling infrastructure costs.

Why These Specs Matter

In a data center, unplanned downtime or silent data corruption can cost thousands per minute. The Samsung M393B5273EB0-CK0 RDIMM is engineered to prevent exactly that, turning four architectural features into real operational resilience. Its ECC technology detects and corrects single-bit errors in flight—when a memory cell flips due to background radiation, your virtualization cluster keeps running without corrupting a critical VM state. The registered signal buffer means you can populate all 24 DIMM slots in a 2U server without the command-address bus collapsing under electrical load, directly supporting dense VMware or Kubernetes nodes where memory is the bottleneck. As a dual-rank x8 module, it interleaves access across two internal ranks, giving the memory controller more open pages to hit. In an in-memory database like Redis or SAP HANA, that translates to higher transaction throughput because the CPU spends less time waiting on row activate commands. And because it runs at a true 1600MHz with CL11 timing, you get predictable, low-latency response under sustained 100 % load—not just a peak speed number. This is not about specs: it is about keeping a revenue-critical database consistent and a multi-tenant cloud platform stable, hour after hour.

Endurance & Reliability

General Virtualization
This RDIMM’s registered architecture and ECC support are essential for stable multi-tenant virtualization hosts. Populate all available channels with identical 4GB modules to maximize memory bandwidth while keeping total capacity flexible—aim for at least 32–64GB per host for moderate VM density. Always install modules in matched pairs or sets to preserve dual/triple-channel interleaving and avoid memory errors under sustained load.

In-Memory Database
In-memory databases demand large capacity, low latency, and absolute data integrity, making ECC RDIMMs mandatory. Use the maximum number of identical 4GB modules your server board supports, filling every DIMM slot to reach the highest possible capacity (e.g., 384GB on a 24-slot board). Even though 4GB is a modest DIMM size, populating all channels helps sustain throughput for real-time analytics and caching workloads.

High-Performance Computing (HPC)
HPC clusters prioritize memory bandwidth per core; deploying these DDR3-1600 registered DIMMs in balanced, populated-channel configurations minimizes NUMA latencies. Fill all memory channels per CPU socket with identical 4GB RDIMMs—often one DIMM per channel—to achieve peak rated speed without downclocking. Verify BIOS settings enforce 1600MT/s operation, as mixing ranks or exceeding channel limits can force a speed reduction and impair floating-point throughput.

Verified Compatibility

Rigorously tested server memory. Compatible with Dell PowerEdge R720, HP ProLiant DL380p Gen8, IBM System x3650 M4.

FAQ