General

Engineer's Note

Designed for legacy server platforms, this 32GB DDR3-1066 Registered ECC RDIMM ensures data integrity and system stability in virtualization and in-memory database workloads. Its Quad Rank x4 configuration maximizes capacity density per channel, while the Registered signal type and CL7 latency provide reliable operation in multi-DIMM configurations.

Technical Specs & Insights

1. 32 GB capacity per module dramatically increases hypervisor consolidation ratios, allowing more virtual machines to run on the same physical server without sacrificing memory headroom.
2. ECC protection continuously corrects single-bit errors in real time, preventing silent data corruption that could crash transactional databases or compromise long-running analytics jobs.
3. Registered signal type buffers command and address lines, enabling a server board to populate all 24 DIMM slots stably even under full load for large-memory footprint applications.
4. Quad Rank x4 architecture packs maximum density into one RDIMM, reducing the need for extra modules while preserving the wide channel parallelism that benefits in-memory caching engines.
5. 1066 MHz clock speed delivers a consistent 8.5 GB/s throughput perfectly suited for steady-state legacy enterprise workloads, where deterministic latency matters more than peak bandwidth.

Why These Specs Matter

The M393B4G70AM0-CF8Q5 is a 32GB DDR3 Registered DIMM engineered for server platforms, and its four defining characteristics translate directly into uptime, performance, and predictability for your data center. ECC is your insurance against silent data corruption: in a virtualization cluster hosting dozens of virtual machines, a single uncorrected bit-flip can cascade into financial miscalculations or application crashes overnight—this module detects and corrects those errors on the fly. The Registered signal buffer stabilizes electrical loads across densely populated channels, so you can populate a server with up to 384GB of RAM without signal degradation, a non-negotiable requirement when consolidating heavy Tier-1 workloads onto fewer hosts. Quad Rank x4 organization leverages rank interleaving to keep data flowing concurrently; during peak load on a Redis or SAP HANA in-memory database, concurrent rank accesses reduce row-cycle bottlenecks, slashing latency under contention. Paired with a tight CAS latency of only 7 cycles, frequently accessed hot data gets served faster, making the difference between a real-time dashboard and a sluggish one. Together, these features ensure that your virtualized infrastructure or memory-analytics engine stays reliable and razor-sharp around the clock.

Endurance & Reliability

General Virtualization
For general virtualization hosts, capacity is the priority. Deploy six or eight of these 32GB quad-rank RDIMMs across all memory channels (e.g., 6×32GB = 192GB or 8×32GB = 256GB) to maximize VM density. Stick to identical modules and populate channels symmetrically to maintain balanced interleaving and reliable ECC protection.

In-Memory Database
In-memory databases hunger for both capacity and low latency. Fill every available channel with one 32GB DIMM to reach 256GB–512GB while avoiding multi-DIMM‑per‑channel drops in speed. Although DDR3‑1066 CL7 is modest, the large 32GB quad-rank modules let you hit high capacities without exhausting slot count, reducing memory-controller load.

High-Performance Computing
HPC workloads demand maximum bandwidth. Install one of these quad-rank RDIMMs per channel across all channels (typically 8 modules for a dual-socket system) to achieve full channel interleaving and peak throughput. Avoid mixing ranks or speeds—homogeneous 32GB registrations sustain steady data feeds for parallel simulations, yet 1066MHz may limit some compute-bound kernels, so verify per-core memory bandwidth requirements.

Verified Compatibility

Rigorously tested server memory, compatible with Dell PowerEdge R710, HP ProLiant DL380e G8, and more.

FAQ