General

Engineer's Note

With its DDR3-1600 speed, ECC error correction, and registered signal buffering, this Samsung M393B5273QB0-CK0 RDIMM is purpose-built for server platforms handling virtualization, in-memory databases, and data-integrity-critical workloads. The dual-rank x8 organization at CL11 improves memory bandwidth utilization and signal stability in dense, multi-DIMM configurations typical of enterprise-class servers.

Technical Specs & Insights

1. End-to-end single-bit error correction eliminates silent data corruption, preserving the integrity of transactional databases that financial institutions rely on during high-frequency settlement.
2. Registered buffering cleans up multi-DIMM command and address lines, allowing fully populated memory channels to run without signal dropout in dense rack servers.
3. Dual-rank with x8 DRAM organization doubles the number of accessible banks, keeping memory controllers saturated and drastically reducing hypervisor page-swap stalls under heavy virtual machine consolidation.
4. A transfer rate of 1.6 gigatransfers per second supplies the swift caching tier required by real-time ad servers, slashing response latency when millions of impressions flood in per minute.
5. Per-stick capacity of four gigabytes lets DevOps teams fine-tune memory for containerized microservices, avoiding stranded resources and lowering per-core software licensing overhead.

Why These Specs Matter

In a dual-socket server, the Samsung M393B5273QB0-CK0 RDIMM directly addresses four critical pain points. Its ECC technology corrects single-bit errors caused by cosmic radiation. For a VMware cluster hosting customer databases, a bit-flip in a transaction log can lead to data corruption and VM crashes; ECC neutralizes this risk silently. Registered buffering lifts signal loading limits, letting you fill channels with multiple 4GB DIMMs. When scaling an in-memory Redis cache, this preserves clean signal paths for unwavering 24/7 uptime and prevents stalled database transactions. The dual-rank x8 layout implements rank interleaving, overlapping commands to reduce latency. Combined with the 1600MT/s bandwidth (12.8 GB/s), it accelerates memory page fetching for hypervisors and delivers crisp response times for real-time analytics. These four capabilities collectively ensure that your server infrastructure—whether running a dense virtualized farm or a data-intensive in-memory database—operates with uncompromising data integrity and performance.

Endurance & Reliability

General Virtualization
For lightweight virtualized workloads, populate each memory channel identically to maintain balanced performance. A dual-socket server should start with eight of these 4 GB modules (two per channel) for 32 GB total, supporting roughly 10–15 typical VMs. Scale to 16 modules (64 GB) if consolidation density increases, but plan a future transition to 8 GB or 16 GB RDIMMs for headroom.

In-Memory Database
In-memory databases demand the lowest latency and sufficient capacity to hold entire datasets. Since this is a 4 GB module, fill every available slot to maximize capacity—e.g., 24 modules in a dual-socket system yields 96 GB, suitable for small Redis or Memcached instances. For production datasets beyond 100 GB, supplement nodes or migrate to higher-density DIMMs, as populating all slots also increases power and cooling costs.

High Performance Computing
HPC nodes rely on memory bandwidth as much as capacity. Install identical modules in sets that match the processor’s memory channels: for a platform with four channels per CPU, use eight 4 GB modules per node (one per channel) to deliver peak bandwidth with 32 GB total. For memory-bound simulations, double the count to two DIMMs per channel (64 GB) while keeping ranks balanced to avoid performance penalties.

Verified Compatibility

Rigorously tested server memory, compatible with Dell PowerEdge R720, HP DL380p Gen8, and more.

FAQ