General

Engineer's Note

Designed for server environments requiring data integrity, this 2GB DDR3-1333 RDIMM with ECC and registered signaling ensures reliable operation in virtualization and small-scale in-memory database workloads. Its single-rank x8 organization and CL9 latency minimize electrical loading on the memory bus, improving signal stability and enabling consistent performance in dense rack configurations.

Technical Specs & Insights

1. ECC protection transparently corrects single-bit errors, preserving data integrity in long-running virtualization and database workloads.
2. Registered buffering isolates the memory controller from electrical loads, enabling stable signal integrity when all server memory channels are fully populated.
3. The 1333 MT/s data rate supplies ample throughput for multi-threaded server processors, preventing memory bandwidth starvation during peak concurrent access.
4. Operating at 1.35 volts reduces thermal dissipation and energy draw across dense rack deployments, directly lowering data center operating costs.
5. A Single Rank x8 organization minimizes electrical loading and access latency, delivering consistent virtual machine responsiveness under heavy consolidation.

Why These Specs Matter

When deploying mission‑critical server infrastructure, the Micron MT9KSF25672PZ-1G4D1AD RDIMM directly addresses the realities that keep IT managers awake at night. Its ECC circuitry continuously detects and corrects single‑bit memory errors—silent data corruption that, in a virtualized cluster hosting dozens of VMs, could cascade into unexplained application crashes or filesystem inconsistencies. Paired with the Registered buffer, this module stabilizes signal integrity across multiple ranks and DIMM slots, so you can densely populate a 2U rack server without risking boot failures under heavy memory controller loads—a non‑negotiable requirement when scaling VMware ESXi or Hyper‑V hosts. The 1.35V low‑voltage DDR3 design further cuts thermal output in confined chassis, reducing cooling opex while maintaining 1333 MHz throughput at CL9 latency. For in‑memory databases like Redis or SAP HANA, that balance of speed and correctness ensures real‑time transaction processing never stalls on a corrupted cache line, safeguarding both performance and data trustworthiness.

Endurance & Reliability

General Virtualization
For general virtualization, populate all memory channels identically to ensure balanced NUMA access. With 2 GB registered ECC DIMMs, a dual-socket server using 12 modules per CPU (24 total) delivers 48 GB, which supports a modest number of light virtual machines. Always install identical DIMMs and configure mirroring or sparing for critical guest availability.

In-Memory Database
In-memory databases require capacity plus ECC integrity. Fill every DIMM slot with these 2 GB RDIMMs to reach the platform’s maximum—e.g., 48 GB in a 24‑slot server—suitable for small Redis or test instances. The registered ECC signalling prevents silent data errors during sustained writes. Monitor utilisation and plan to migrate to higher-capacity DIMMs as data grows.

HPC
High‑performance computing relies on memory bandwidth. Place one 2 GB RDIMM per channel across all available channels (e.g., 8 channels per socket) to enable full channel interleaving and peak throughput. A dual‑socket node with 16 modules provides 32 GB, sufficient for bandwidth‑bound kernels. The 1.35 V low‑voltage rating also reduces power and cooling demands in dense cluster deployments.

Verified Compatibility

Thoroughly tested server RDIMM compatible with Dell R720, R620, HP DL380p G8, Cisco C220 M3, Lenovo x3650 M4.

FAQ