General

Engineer's Note

This 16GB DDR3-1333 Registered ECC RDIMM is specifically built for enterprise server platforms, delivering the reliability required for virtualization clusters, in-memory databases, and mission-critical applications where data integrity is non-negotiable. Its dual-rank x4 organization maximizes bank-level parallelism for superior memory bandwidth efficiency, while the registered signal path and ECC operation at a low 1.35V ensure rock-solid stability and error correction across fully populated multi-DIMM channels.

Technical Specs & Insights

1. ECC error correction silently detects and corrects memory faults, safeguarding transactional data integrity and uptime in virtualized database environments.
2. Registered signal type buffers command and address signals, enabling stable high-capacity memory configurations essential for dense consolidation of enterprise workloads.
3. Dual Rank x4 organization exploits rank interleaving to maximize sustained channel throughput, ensuring consistent low-latency responsiveness for mixed multi-tenant applications.
4. Low-voltage operation significantly cuts power draw and thermal output, reducing data center cooling demands and cumulative energy costs per server rack.
5. Generous module capacity provides sufficient headroom for hypervisor memory pools and in-memory caching, preventing resource contention during peak loads without immediate hardware expansion.

Why These Specs Matter

When you are running a dense virtualization cluster or an in‑memory database, the last thing you can afford is silent data corruption or a mid‑day server crash. The M393B2G70AH0-YH9, a registered DDR3 RDIMM with ECC, is engineered precisely to eliminate those risks. Its ECC engine continuously catches and corrects single‑bit errors—an absolute necessity in a 24/7 virtualized environment where a flipped bit inside one guest machine can cascade into application failures or data loss across the entire host. The registered signal buffer, meanwhile, keeps command‑address signals stable as you populate all channels, so your hypervisor can confidently address large memory pools without the electrical loading that would cripple unbuffered modules.

Dual‑rank x4 organization provides another practical advantage: by interleaving accesses across two ranks on the same stick, it boosts bandwidth during massive, simultaneous read/write operations. For an in‑memory database like Redis or SAP HANA, that means faster query responses under heavy concurrent loads. And because this module operates at just 1.35 V, it cuts power draw and thermals across a fleet of servers—lowering your cooling costs without sacrificing the 1333 MHz speed you rely on. Every one of these four traits directly translates into less downtime, tighter data integrity, and better performance density in the rack.

Endurance & Reliability

General Virtualization
For a general virtualization host, populate at least two RDIMMs per memory channel to balance capacity and bandwidth. With 16 GB DDR3-1333 ECC Registered DIMMs, a dual-socket server using eight modules per CPU delivers 128 GB—ample for 20–30 light to moderate VMs while maintaining the reliability of registered memory. Avoid leaving channels empty, as symmetric configurations maximize interleaving and minimize NUMA latency.

In-Memory Database
In-memory databases demand large, contiguous memory pools and absolute data integrity. Deploy a fully balanced configuration, such as 16 × 16 GB RDIMMs across all memory channels on a two-socket platform, achieving 256 GB total capacity. The 1.35 V low-voltage operation and CL9 latency reduce thermal strain, while ECC corrects single-bit errors that could corrupt structured data sets. Populate the maximum number of ranks (dual-rank x4 modules) to sustain high transaction throughput without throttling.

High Performance Computing (HPC)
HPC workloads favor memory bandwidth as much as capacity. Install an equal number of identical 16 GB DDR3-1333 RDIMMs per socket—typically six or eight per processor—to enable full-channel interleaving. Registered ECC DIMMs at 1.35 V minimize power per node across large clusters, and dual-rank x4 construction improves signal integrity at scale. For memory-bound simulations, select the highest supported speed while keeping all channels populated to prevent bandwidth starvation under massively parallel I/O.

Verified Compatibility

Rigorously tested, this DDR3L RDIMM is compatible with Dell R720, HP DL380p G8, Lenovo x3650 M4 servers.

FAQ