General

Engineer's Note

This Samsung M393B2G70QH0-1866 is a 16GB DDR3-1866 Registered ECC RDIMM engineered for enterprise servers and workstations, ideally deployed in virtualization clusters, memory-resident databases, and mission-critical workloads where data integrity is non-negotiable. Its dual-rank x4 organization with registered signal buffering ensures stable operation under fully populated memory channels, while ECC protection corrects single-bit errors on the fly to prevent silent data corruption.

Technical Specs & Insights

1. 16GB capacity provides ample headroom for virtualized environments, allowing more VMs per server without exhausting physical memory.
2. ECC protection silently corrects single-bit errors, safeguarding long-running enterprise workloads from silent data corruption.
3. Registered signal type stabilizes command and address lines at high capacities, essential for densely populated server boards with multiple DIMMs per channel.
4. DDR3-1866 speed delivers higher peak bandwidth per channel, accelerating in-memory databases and real-time analytics under concurrent user loads.
5. Dual rank x4 organization maximizes bank-level parallelism, boosting sustained throughput for mixed transactional workloads in database servers.

Why These Specs Matter

Designed specifically for server and data center environments, the Samsung M393B2G70QH0-1866 is a 16GB DDR3 RDIMM that integrates four critical features essential to mission-critical workloads. First, its Error Correcting Code (ECC) detects and corrects single-bit memory errors on the fly. In a virtualization cluster running dozens of VMs, a cosmic ray or electrical noise flipping a single bit in active memory can silently corrupt a financial transaction or crash a hypervisor—ECC eliminates that risk, ensuring data integrity and uptime you can bank on. Second, the Registered (buffered) signal architecture redrives command and address signals, stabilizing the electrical load on the memory bus. This allows servers to populate all 24 DIMM slots per blade without sacrificing reliability, so your VMware or Hyper‑V hosts scale to terabyte‑level memory pools without mysterious lockups. Third, the dual‑rank x4 organization interleaves two independent sets of memory chips on the module, boosting bandwidth through parallel access. For an in‑memory database like Redis or SAP HANA, this translates into noticeably faster query responses as the memory controller reaps the benefits of internal pipelining. Fourth, the 1866MHz clock speed with a tight CL13 latency delivers high data rates with minimal wait states, directly accelerating real‑time analytics where every nanosecond counts. Together, these attributes mean your consolidated infrastructure achieves enterprise‑class stability and speed—fewer outages, faster insights, and a lower total cost of ownership.

Endurance & Reliability

This Samsung M393B2G70QH0-1866 is a 16GB DDR3-1866 registered ECC server RDIMM, suited for capacity- and reliability-focused deployments.

General Virtualization
Populate memory channels evenly across CPUs to avoid performance bottlenecks. A common starting point is four 16GB modules per socket (64GB per CPU), providing ample capacity for 10–20 virtual machines. Scale to eight modules per socket (128GB) as VM density grows, keeping DIMM ranks identical for optimal interleaving.

In-Memory Database
Maximize capacity by fully populating all DIMM slots with identical 16GB RDIMMs. A dual-socket server with 24 slots can reach 384GB, enabling large in-memory datasets. Maintain balance across memory channels to reduce NUMA access latency and improve query throughput.

High-Performance Computing
For peak bandwidth, install one 16GB DIMM per memory channel—four per CPU in quad-channel platforms. An eight-module (128GB) dual-socket configuration delivers full 1866 MHz speed and sufficient capacity for MPI jobs. If capacity needs exceed bandwidth, use two DIMMs per channel but expect a slight clock reduction.

Verified Compatibility

Verified server DDR3 RDIMM, rigorously tested. Compatible: Dell R720/R620, HPE DL380p Gen8, IBM x3650 M4.

FAQ