General

Engineer's Note

The M393B1G70QB0-CK0 is a server-class DDR3 Registered ECC memory module optimized for virtualization, in-memory databases, and mission-critical workloads where data integrity is paramount. Its 1.5V DDR3-1600 operation with CL11 timings and Single Rank x4 configuration delivers balanced bandwidth and reduced electrical loading, while ECC and registered signaling ensure stable, error-free performance at scale across multi-DIMM server platforms.

Technical Specs & Insights

1. RDIMM architecture buffers command and address signals, stabilizing signal integrity when populating every slot in dense server chassis and enabling seamless scalability.
2. ECC error correction instantly resolves single-bit faults, preserving data accuracy for financial ledgers and preventing silent corruption in high-availability databases.
3. Eight gigabytes per module supplies a balanced memory footprint for mid-range virtualized environments, letting you pack more guest instances without exhausting power budgets.
4. Single Rank x4 organization with x4-width DRAM chips strengthens chip-kill resilience, isolating and surviving an entire failed DRAM component in always-on enterprise servers.
5. The peak transfer rate of 12.8 GB/s sustains concurrent access streams from multiple CPU cores, keeping latency low under heavy query loads in consolidated data center workloads.

Why These Specs Matter

Based on its 240-pin RDIMM form factor and Registered signal type, this is clearly a server-grade memory module designed for mission-critical enterprise environments where data integrity and uptime are non-negotiable. The Samsung M393B1G70QB0-CK0 integrates four defining characteristics that directly address the real-world pain points of IT infrastructure managers.

The ECC error correction is your silent guardian against single-bit memory errors caused by background radiation, which can silently corrupt financial records or hypervisor data. In a virtualized cluster hosting dozens of virtual machines, one uncorrected error can cascade into catastrophic multi-tenant data corruption and costly downtime. The Registered buffering re-drives address and command signals, stabilizing the electrical load and allowing you to fully populate all memory channels for massive 192GB or 384GB footprints without signal degradation, a prerequisite for dense VMware or Hyper-V consolidations. Operating at 1600MHz with a single-rank x4 architecture, it delivers robust 12.8GB/s peak bandwidth while minimizing bus contention, which means an in-memory database platform like SAP HANA can sustain rapid parallel lookups across many DIMM sockets without throttling. Furthermore, the 1.5V standard voltage ensures seamless drop-in stability across the broad ecosystem of legacy and current server boards, safeguarding your infrastructure investment with consistent, predictable power draw. Together, these attributes translate into a foundation where your virtualized workloads and transactional databases run uncorrupted, unthrottled, and uninterrupted around the clock.

Endurance & Reliability

This is a server-grade DDR3 ECC Registered DIMM (RDIMM) designed for reliable, high-density memory configurations. Below are capacity planning recommendations for typical server workloads using this 8 GB module.

General Virtualization
Populate all memory channels symmetrically to maximize bandwidth and leverage ECC protection. For dual-socket systems, aim for at least 64–128 GB total by installing eight to sixteen modules across channels, which comfortably hosts 20–40 light to moderate VMs. Balance capacity with the host’s NUMA topology to avoid remote memory access penalties.

In-Memory Database
ECC is critical for data integrity; use the maximum number of identical modules per channel to sustain low latency under heavy read/write loads. Plan for 128 GB or more by populating all DIMM slots (for example, sixteen 8 GB sticks in a four-channel platform) so the entire dataset resides in RAM. Avoid mixing DIMM ranks or speeds to preserve stable CAS 11 timing.

High-Performance Computing
Memory bandwidth often limits HPC node performance. Install identical 8 GB RDIMMs in balanced populations—typically one or two DIMMs per channel across all memory controllers—to sustain peak 1600 MT/s throughput. For nodes handling large MPI ranks, consider 64–128 GB per socket, ensuring all channels are equally loaded. Keep voltages at 1.5 V and cooling adequate to prevent throttling during sustained parallel jobs.

Verified Compatibility

Rigorously tested server memory, compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650.

FAQ