General

Engineer's Note

Optimized for dense virtualization and in-memory databases, this 128GB DDR4-2933 RDIMM provides strong data integrity with ECC and registered signal buffering. Its quad-rank x4 organization maximizes capacity per channel while maintaining stable 2933 MT/s operation at a low 1.2 V, ideal for scale-up servers requiring reliable, high-capacity memory footprints.

Technical Specs & Insights

1. A single high-density module frees up valuable DIMM slots, enabling massive memory pools for virtualized environments and large in-memory databases without requiring additional server nodes.
2. Integrated ECC detects and corrects single-bit memory errors in real time, preserving system uptime and protecting mission-critical workloads from silent data corruption.
3. Registered design buffers command and address signals, ensuring reliable operation across fully loaded multi-rank configurations in high-capacity server platforms.
4. Quad Rank x4 architecture interleaves access across numerous bank groups, delivering consistent throughput under heavy multi-VM consolidation and transaction processing.
5. High-speed DDR4 bandwidth accelerates data-intensive applications such as real-time analytics and AI inference, minimizing latency in clustered server deployments.

Why These Specs Matter

When you consolidate a dense virtualization cluster onto a single node or rely on an in-memory database like SAP HANA, the Samsung M393AAG40M3B-CYFCO RDIMM becomes the foundation of your uptime story. Its 128GB capacity on a single stick directly addresses server sprawl: you can now pack 3TB into a 24-slot 2U server, hosting hundreds of VMs without the latency penalty of swapping to NVMe storage. That extreme density is only practical because this is a Registered DIMM, whose onboard buffer stabilizes command and address signals even when all slots are fully populated with power-hungry Quad Rank x4 chips—eliminating the electrical loading issues that would crash an unbuffered configuration. Meanwhile, the native ECC engine silently corrects single-bit memory errors in real time. In a financial database, an uncorrected bit flip inside an in-memory index can corrupt a transaction ledger outright; here, ECC absorbs cosmic-ray-induced faults without an application even noticing, preserving audit trail integrity. Coupled with a responsive DDR4-2933 clock, the module keeps multi-core Xeon processors fed during peak loads, guaranteeing that your virtualized tenants never experience the noisy-neighbor effect where one VM’s memory fault destabilizes the entire hypervisor. It is not merely capacity—it is a physics-defying insurance policy for business-critical data.

Endurance & Reliability

General Virtualization
Registered ECC DDR4-2933 modules are ideal for virtualized environments where data integrity and stability are paramount. Deploy six or eight identical 128GB RDIMMs across balanced memory channels—typically one DIMM per channel in a dual-socket server—to maximize throughput for dense VM consolidation. This configuration delivers 768GB–1TB total capacity, comfortably supporting high VM-to-core ratios while maintaining hardware error correction.

In-Memory Database
For in-memory databases demanding single-server scale-up, populate all available channels with 128GB quad-rank RDIMMs to reach multi-terabyte footprints with minimal NUMA penalties. Use at least eight modules per socket (1TB per CPU) to keep active datasets entirely in DRAM, and pair the 2933MT/s speed with CPUs that support the full memory bandwidth to avoid bottlenecking transactional or analytical workloads.

High Performance Computing
HPC clusters benefit from the strong ECC coverage of registered 128GB DIMMs during long-running simulations. Configure one DIMM per channel across all memory controllers—often 8 or 12 modules per node—to achieve balanced bandwidth at 2933MT/s while supplying ample capacity for large-scale models. Slight CAS 21 latency is offset by superior reliability and the reduced requirement for checkpointing in tightly coupled parallel jobs.

Verified Compatibility

Rigorously tested, server compatible: Dell PowerEdge R750, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, and more.

FAQ