General

Engineer's Note

This RDIMM with ECC and registered signal buffering is engineered for server platforms running memory-intensive workloads such as virtualization, in-memory databases, and mission-critical applications where data integrity is paramount. Its dual-rank x4 configuration and CL9 latency optimize memory bandwidth and command queuing, while the hardware error correction ensures resilient operation under sustained load.

Technical Specs & Insights

1. Registered signal type buffers the command and address lines, enabling higher memory capacities per server node without sacrificing signal integrity as more DIMMs are populated.
2. ECC error correction actively detects and corrects single-bit memory errors, preventing silent data corruption in long-running database and virtualization workloads.
3. Dual Rank x4 organization interleaves memory access across two ranks, boosting sustained bandwidth utilization for memory-intensive applications like in-memory analytics.
4. 1333 MHz operation delivers a proven balance of throughput and latency, ensuring stable data flow for mid-range enterprise workloads without oversubscribing the memory bus.
5. 8 GB capacity packs enough density per stick to support dozens of lightweight virtual machines or containers on a single host, maximizing consolidation ratios within constrained chassis layouts.

Why These Specs Matter

The Micron MT36JSF1G72PZ-1G4K1 is an 8GB DDR3-1333 registered ECC RDIMM built for enterprise servers. Its four key attributes directly address the real-world demands of virtualized infrastructures and in-memory databases. ECC continuously detects and corrects single-bit errors. In a VMware cluster running dozens of virtual machines, a single undetected bit flip can silently corrupt guest data or trigger cascading service crashes; ECC acts as a relentless safeguard, preserving data integrity and maximizing uptime. Registered buffering stabilizes command and address signals, allowing you to populate all memory channels with high module counts without signal degradation—essential for achieving the dense RAM capacity required by heavily loaded virtual hosts. The dual-rank x4 organization takes advantage of rank interleaving to boost effective bandwidth and reduce average latency, a direct performance win for memory-hungry databases like Redis or SAP HANA where every microsecond of delay impacts millions of transactions. Finally, the 1333MHz frequency with CL9 latency delivers responsive, consistent throughput while keeping thermal and power profiles in check. Together, these characteristics transform the module into a trustworthy foundation that keeps your critical workloads running non-stop.

Endurance & Reliability

This 8GB DDR3-1333 module carries ECC, Registered signaling, and a 240-pin RDIMM form factor, clearly identifying it as server-grade memory. The following capacity planning advice targets dual-socket servers with triple- or quad-channel DDR3 architectures.

General Virtualization
Populate memory channels symmetrically to enable interleaving and maximize throughput. For a triple-channel platform, start with six identical 8GB RDIMMs (three per CPU) to deliver 48 GB of balanced capacity suitable for 10–15 light virtual machines. Scale by adding matching DIMMs in sets of three or four per socket, keeping all channels populated to avoid bandwidth penalties.

In-Memory Database
Prioritize total capacity so the working set resides entirely in RAM. Fill every available DIMM slot with 8GB RDIMMs; a 24-slot server yields up to 192 GB, while a 32‑slot configuration reaches 256 GB. Dense population may drop speed to 1066 MHz, but the microsecond latency gain far outweighs the minor frequency trade-off for Redis, Memcached, or small SAP HANA footprints.

High Performance Computing
Bandwidth is critical for MPI and simulation codes. Install one 8GB RDIMM per channel to maintain the full 1333 MHz clock; a dual-socket, quad-channel node provides 64 GB with peak throughput. If larger memory is needed, populate two DIMMs per channel, accepting a downshift to 1066 MHz. Always match ranks and part numbers across sockets to preserve cache-coherent uniformity.

Verified Compatibility

Rigorously tested server memory, verified compatible with Dell PowerEdge R710, R720, HP ProLiant DL380 G7, and more.

FAQ