General

Engineer's Note

This is a server-grade DDR3-1333 Registered ECC module (RDIMM) ideally suited for legacy virtualization hosts and memory-intensive database servers where data integrity and 24/7 stability are critical. Its dual-rank x4 organization with ECC and registered signaling ensures robust signal integrity across fully populated memory channels, allowing the system to correct single-bit errors on the fly and maintain reliable operation under sustained load.

Technical Specs & Insights

1. ECC scrubbing silently corrects single-bit errors, preserving data integrity for mission-critical databases and preventing costly transactional discrepancies.
2. Registered signal buffering stabilizes command and address lines under fully populated memory channels, essential for maintaining uptime in dense rack deployments.
3. Dual rank x4 organization leverages rank interleaving to saturate the memory bus, reducing latency variability across multiple virtual machines competing for I/O.
4. The 1333 MHz clock rate delivers 10.6 GB/s of throughput per channel, comfortably absorbing concurrent analytics queries without stalling processor pipelines.
5. A four-gigabyte baseline capacity per DIMM allows operators to right-size memory for light container hosts or dedicated caching appliances without wasting provisioned resources.

Why These Specs Matter

Based on the specifications, the Registered DIMM form factor, ECC, and 240-pin interface confirm this is server memory. For infrastructure engineers, the MT36JSZF51272PY-1G4D1AB module is not just a component; it is a safeguard against invisible data corruption and downtime.

The four critical characteristics here are ECC, Registered signal buffering, dual-rank organization, and 1333MHz bandwidth. In a dense virtualization cluster, silent single-bit errors in DRAM can cascade into a corrupt virtual machine state or a kernel panic. ECC correction ensures that your hypervisor stays up and your virtualized workloads remain accurate, preventing costly service interruptions. Meanwhile, the Registered technology buffers command and address signals, which stabilizes the electrical load on the memory controller when all 24 DIMM slots are populated. This directly translates to scaling up your VMware or KVM host confidently, without sacrificing 24/7 operational stability. For an in-memory database like Redis or a transactional SQL cache, the dual-rank x4 configuration enables rank interleaving, fetching data from alternating ranks to reduce access latency and maximize channel utilization. Paired with the sustained 1333MHz throughput, this memory guarantees that your hottest datasets are served with consistent, low-response jitter under peak load. It moves you from hoping your server runs correctly to knowing your data pipeline is fundamentally resilient.

Endurance & Reliability

General Virtualization
Deploy at least four of these 4 GB registered DIMMs (16 GB total) to comfortably host a moderate number of virtual machines. Populate identical modules across all memory channels—two per channel in a typical dual‑socket server—to preserve balanced NUMA performance and full ECC coverage.

In‑Memory Database
Maximize capacity by filling all available slots, targeting 48 GB or more with twelve or more modules. The dual‑rank x4 organization keeps bank‑group loading manageable while ECC safeguards data integrity. Spread modules evenly across memory controllers to reduce latency and avoid hot‑spot contention.

High‑Performance Computing (HPC)
Install one 4 GB RDIMM per channel to enable full memory interleaving and deliver the highest sustainable bandwidth. Standardize on this module across cluster nodes for consistent performance; the 1333 MT/s speed, CL9 latency, and registered signaling ensure stable operation under sustained parallel loads.

Verified Compatibility

Tested server-grade RDIMM. Fits Dell R710, R610, HP DL380 G7, DL360 G7, IBM x3650 M3.

FAQ