General

Engineer's Note

This 32GB DDR4-2933 RDIMM, with its registered signal type and ECC, is engineered for enterprise servers and workstations where data integrity is critical for virtualization, in-memory databases, and mission-critical workloads. Its dual-rank x4 organization leverages bank interleaving to boost sustained bandwidth under heavy load, while the CL21 latency and 1.2V operation maintain the power efficiency essential for dense rack deployments.

Technical Specs & Insights

1. ECC protection detects and corrects single-bit errors in real time, preserving data integrity in mission-critical databases and financial transactions where even a silent corruption is unacceptable.

2. Registered signal buffering stabilizes command and address lines across densely populated server boards, enabling fully loaded memory channels without signal degradation in large-scale virtualization hosts.

3. A 32GB capacity per module allows a dual-socket server to comfortably allocate hundreds of virtual machines, maximizing consolidation ratios without sacrificing per-VM memory headroom.

4. Dual Rank x4 organization leverages rank interleaving to keep 2933 MT/s data streams flowing, reducing idle cycles and improving effective bandwidth under mixed read/write enterprise workloads.

5. 1.2V low-voltage operation cuts power draw across racks of memory, shrinking cooling overhead and lowering total cost of ownership in always-on data center environments.

Why These Specs Matter

The M393A4K40CB2-CVF is a 32GB DDR4-2933 Registered DIMM engineered for critical enterprise workloads. Its ECC corrects single-bit errors and detects multi-bit faults, protecting data integrity in virtualized clusters; a flipped bit in a hypervisor can crash dozens of VMs, unacceptable in finance or healthcare databases. The Registered buffer reduces CPU electrical load, enabling full server memory population to terabyte scales with uncompromised stability—exactly what dense container farms and in-memory caching require. Dual-rank x4 organization interleaves accesses to hide precharge latencies, boosting effective bandwidth for in-memory databases and real-time analytics where every query cycle matters. The 2933MT/s speed and PC4-23400 bandwidth provide 23.4GB/s per channel, preventing throughput starvation when many VMs or caching layers run concurrently. Together, these capabilities deliver fewer outages, lower TCO, and unwavering performance under 24/7 operation.

Endurance & Reliability

General Virtualization
Deploy one 32GB RDIMM per channel across all available memory channels—typically 8 modules per CPU socket for mainstream Xeon or EPYC servers—to deliver balanced bandwidth and a total of 256GB per node. This symmetric population fully utilizes the dual‑rank x4 design for interleaving gains while the registered ECC safeguards dozens of guest VMs against soft errors under 24/7 operation.

In-Memory Database
Maximize capacity per socket by installing 12 to 16 of these 32GB dual‑rank modules on a 6‑ or 8‑channel platform, yielding 384GB to 512GB of addressable memory for large Redis, SAP HANA, or Memcached instances. The x4‑based dual‑rank organization reduces read latency through rank interleaving, and CL21 at 2933 MT/s keeps transaction response times predictable while ECC maintains data integrity during in‑memory commits.

High-Performance Computing
Populate every memory channel with one 32GB RDIMM to achieve the highest sustained bandwidth—8 or 12 modules per socket produce 256GB or 384GB configurations ideal for CFD, weather modeling, and molecular dynamics. Registered DIMMs preserve signal quality in densely loaded boards, and the DDR4‑2933 speed paired with dual‑rank interleaving supplies the throughput HPC codes demand without exceeding power budgets.

Verified Compatibility

Rigorously tested server memory, compatible with Dell PowerEdge R740, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650.

FAQ