General

Engineer's Note

Designed for enterprise servers and high-density virtualization platforms, this 32GB DDR4-2400 RDIMM leverages quad-rank x4 organization and registered signaling to maximize memory capacity per channel while maintaining signal integrity under heavy load. Its ECC protection and CL17 latency ensure data accuracy and reliability, making it ideal for in-memory databases and mission-critical workloads that cannot tolerate silent data corruption.

Technical Specs & Insights

1. A 32 GB capacity per module maximizes memory density in servers, allowing more virtual machines to be packed onto a single host without sacrificing performance.
2. ECC protection transparently corrects single-bit errors, safeguarding transaction integrity in databases and financial applications where data accuracy is non-negotiable.
3. Registered signal buffering decouples the memory controller from chip loading, enabling stable operation across large memory populations essential for enterprise virtualization.
4. Quad Rank x4 interleaving enhances server throughput by overlapping memory accesses, which reduces latency under heavy multi-threaded server workloads.
5. 2400 MT/s transfer rate with CL17 latency delivers 19.2 GB/s of balanced bandwidth, efficiently feeding multi-core server CPUs for data analytics and web serving.

Why These Specs Matter

The M386A4G40DM1-CRC is firmly a server-class memory module, a 32GB DDR4-2400 Registered DIMM engineered for environments where uptime and data integrity are non-negotiable. Its four defining characteristics translate directly into mission-critical resilience. First, ECC error correction actively detects and corrects single-bit memory errors—silent bit flips that can corrupt a financial transaction, crash a hypervisor, or slowly poison a large-scale dataset in an in-memory database like SAP HANA. What that means for you is that a stray cosmic ray won’t become a midnight outage. Second, the Registered (buffered) architecture places a register between the CPU’s memory controller and the DRAM chips, dramatically reducing electrical load. In a fully populated 24-slot virtualization cluster, this stabilizes signal integrity so you can run dense multi-terabyte configurations without training failures or intermittent hangs that derail live migration. Third, Quad Rank x4 organization packs four independent ranks of high-density 4-bit-wide DRAMs onto a single stick, maximizing capacity per channel. For a VMware or Kubernetes node hosting dozens of VMs, that higher rank-level interleaving raises effective bandwidth under heavy concurrent access, shrinking response latencies for your critical services. Finally, the DDR4-2400 speed with a modest CL17 latency strikes the ideal balance for rack servers: it delivers reliable throughput and low heat dissipation within 1.2V power envelopes, keeping your data center cooling bill predictable while maintaining synchronous stability across all DIMMs. When you cannot afford a single corrupted page or an unexpected reboot, this module’s design ensures your database queries come back clean and your virtual infrastructure stays resilient.

Endurance & Reliability

General Virtualization
For dense VM consolidation, deploy 6 or 8 identical 32 GB RDIMMs per socket to populate one DIMM per channel, ensuring balanced memory access. This quad-rank, registered ECC module provides the capacity headroom for dozens of virtual machines while maintaining data integrity. Avoid mixing quad-rank DIMMs with other ranks to prevent clock speed degradation.

In-Memory Database
Maximize capacity by fully populating all memory channels with this 32 GB RDIMM, reaching 256 GB or more per CPU. The ECC protection and registered signaling are critical for maintaining in-memory dataset consistency under heavy write loads. Given the CL17 latency and 2400 MT/s speed, prioritize channel count over frequency to sustain high transaction throughput.

High-Performance Computing
Use one 32 GB RDIMM per channel to deliver large per-node memory without sacrificing bandwidth. The quad-rank x4 configuration offers high bank-level parallelism, which benefits memory-intensive HPC workloads like CFD simulations. Ensure the server BIOS is configured for optimal DIMM interleaving, and validate thermal margins since quad-rank registered modules consume more power under sustained I/O.

Verified Compatibility

Rigorously tested and compatible with servers including Dell PowerEdge R740, HPE ProLiant DL380 Gen10, and Lenovo ThinkSystem SR650.

FAQ