General

Engineer's Note

This 64 GB DDR4-3200 Registered ECC module (Dual Rank x4) is engineered for server platforms demanding high data integrity, with ECC and registered signaling ensuring robust error correction and stable operation under heavy, sustained workloads such as virtualization and in-memory databases. Its dual-rank configuration with x4 DRAM devices and a modest CL22 latency provides a balanced profile of high memory density, interleaved access efficiency, and reliable 1.2 V power consumption for dense enterprise deployments.

Technical Specs & Insights

1. A 64GB capacity per module dramatically increases memory density per server node, allowing IT architects to consolidate more virtual machines and containers without hitting capacity bottlenecks.
2. End-to-end ECC corrects single-bit errors on the fly, eliminating silent data corruption that could compromise financial transactions or database integrity.
3. The registered signal path rebuffers command and address lines, enabling fully populated multi-DIMM configurations to run at rated speed with rock-solid electrical stability.
4. Dual Rank x4 organization interleaves data accesses across ranks to keep the memory channel fully utilized, sustaining peak bandwidth under heavy virtualization mixes.
5. 3200 MT/s throughput delivers 25.6 GB/s of channel bandwidth, accelerating real-time analytics and in-memory workloads that demand rapid data movement.

Why These Specs Matter

In a dense virtualization cluster, unexpected data corruption is a silent adversary. The M393A8G40AB2-CWEBQ, a 64GB DDR4-3200 RDIMM, confronts this through its ECC engine: every bit that passes through memory is checked and corrected automatically. A single undetected bit flip in a hypervisor can crash dozens of virtual machines; here, that risk is eliminated at the hardware level, meaning your multi-tenant workloads stay online and your data remains provably intact.

When you move to an in-memory database like Redis or SAP HANA, the stakes shift from basic uptime to deterministic high bandwidth. This module’s Dual Rank x4 organization interleaves data across two independent 64-bit regions on each DIMM, effectively allowing the memory controller to issue back-to-back read commands with minimal idle time—even at the tight CL22 latency of a 3200 MT/s clock. The result is not just theoretical throughput but a real reduction in query tail latency during peak transaction bursts.

Meanwhile, the Registered buffer isolates the command and address bus from the heavy capacitive load of multi-DIMM channels. In a server packed with 16 or 24 modules per socket, unbuffered memory would suffer signal degradation and force a costly drop in speed. Registered logic keeps all 288 pins under clean signal integrity, so you can populate every slot, scale to terabytes of RAM, and still sustain the full 3200 MT/s. For a database growing beyond a single node or a virtualization farm consolidating hundreds of VMs, that combination—verified correctness, sustained bandwidth, and uncompromised capacity—is what turns a memory spec sheet into a trust anchor for your entire stack.

Endurance & Reliability

General Virtualization
For consolidated virtualization hosts, populate each memory channel with one 64GB dual-rank RDIMM to run at the full 3200 MT/s. A typical dual‑socket server with eight channels per socket receives 16 modules, yielding 1TB of capacity while preserving peak bandwidth—enough to comfortably serve dozens of mixed VMs without sacrificing performance.

In‑Memory Database
In‑memory platforms like SAP HANA demand large, reliable footprints. Install 12 identical 64GB ECC RDIMMs (one per channel across two sockets) for 768GB at maximum 3200 MT/s speed, ideal for balanced workloads. If absolute capacity is the priority, move to 2 DIMMs per channel to reach 1.5TB, accepting a slight frequency reduction to 2933 MT/s due to dual‑rank loading; the built‑in ECC continuously safeguards critical data integrity.

High‑Performance Computing (HPC)
HPC nodes require maximum bandwidth and low latency. Fit exactly one 64GB dual‑rank x4 module per memory channel—for example, eight DIMMs delivering 512GB at 3200 MT/s—to exploit four‑way rank interleaving and maximize stream throughput. The dual‑rank design increases bank‑level parallelism, while ECC ensures numerical accuracy during long‑running simulations, making it the optimal configuration for memory‑bound research codes.

Verified Compatibility

Validated for server use. Rigorously tested, compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2.

FAQ