General

Engineer's Note

The M393B5773DH0-CK0 is a DDR3-1600 Registered ECC RDIMM engineered for legacy server platforms, where it guarantees data integrity in mission-critical workloads such as virtualization and in-memory databases. Its registered signal architecture paired with single-rank x8 organization reduces bus loading and improves signal stability, enabling reliable, high-density memory configurations under sustained operational stress.

Technical Specs & Insights

1. ECC detection and correction safeguards every transaction against single-bit errors, ensuring the uncompromising data integrity demanded by financial ledgers and virtualized database clusters.
2. Registered buffering re-drives command and address signals across densely populated server boards, preserving electrical stability when all memory slots are filled with large-capacity DIMMs.
3. 1600MHz speed translates to a sustained 12.8GB/s per-channel throughput, keeping latency low for concurrent user requests in high-traffic web farms and middleware applications.
4. Single Rank x8 organization reduces bus loading per module, enabling fully loaded server platforms to maintain rated frequency without throttling and maximizing total memory pool density.
5. 2GB capacity delivers a right-sized memory building block for microservices and lightweight container hosts, allowing fine-grained resource allocation that lowers the per-instance hardware footprint.

Why These Specs Matter

The Samsung M393B5773DH0-CK0 is a server-grade DDR3 Registered DIMM, engineered specifically for mission-critical data-center workloads where downtime is unacceptable and data integrity is non-negotiable. Its first vital trait is ECC error correction, which actively detects and fixes single-bit memory faults. In a virtualized cluster running dozens of VMs, a silent bit-flip can corrupt guest operating systems or poison live transactional databases—ECC eliminates this risk, preserving uptime and preventing costly data anomalies. The second feature is the Registered signal architecture; by buffering command and address lines, it stabilizes the entire memory channel when you fully populate slots to maximize capacity. This means you can confidently scale memory for dense virtualization hosts without signal degradation that would otherwise cause random crashes. Third, the DDR3-1600 frequency coupled with a CL11 latency delivers a robust 12.8 GB/s of bandwidth, accelerating in-memory analytics platforms like SAP HANA or real-time caching layers where every nanosecond of fetch delay impacts query throughput. Finally, the single-rank x8 configuration optimizes per-channel electrical loading, enabling higher command rates and more predictable low-latency performance under heavy concurrent access. This translates directly to faster report generation and seamless multi-tenant operation. For server architects, these four attributes together ensure resilient, high-density, and responsive memory subsystems that keep your virtualized applications and databases running at peak efficiency.

Endurance & Reliability

General Virtualization
For general virtualization on older multi-socket servers using triple-channel DDR3 platforms, populate every memory channel with identical 2GB RDIMMs to achieve balanced interleaving. A configuration of two DIMMs per channel (e.g., 6 × 2GB per CPU socket) provides reasonable capacity for light to moderate VM density while ECC and registered buffering ensure stability under mixed workloads.

In-Memory Database
Given the low 2GB capacity per module, these RDIMMs are best suited for targeted caching layers or small-scale in-memory datasets. Install the maximum supported number of DIMMs across all channels to reach the highest aggregate capacity, relying on ECC to safeguard data integrity. For critical datasets, enable memory mirroring mode to increase resilience, though effective capacity will be halved.

High-Performance Computing
In memory-bandwidth-sensitive HPC workloads, populate at least two single-rank 2GB DIMMs per channel to create a pseudo-dual-rank configuration, which significantly boosts peak bandwidth. Distribute the modules uniformly across all available memory channels and avoid mixing different ranks or speeds to maintain consistent interleaving and minimize access latency during parallel computation.

Verified Compatibility

Rigorously tested ECC Registered DDR3-1600 RDIMM. Compatible with Dell PowerEdge R720/R620, HP ProLiant DL380p Gen8, and Lenovo ThinkServer RD430.

FAQ