General

Engineer's Note

Ideal for virtualization and in-memory database workloads, this 16GB DDR4-2400 RDIMM employs registered signaling and ECC to maintain signal integrity and data reliability in high-density server environments. Its single-rank x4 organization minimizes electrical loading on the memory bus, enabling stable operation at the rated CL17 latency even in fully populated 288-pin server platforms.

Technical Specs & Insights

1. ECC protection actively detects and corrects single-bit errors, preserving data integrity in 24/7 server operations and preventing silent data corruption that could compromise transactional accuracy.
2. Registered signal buffering stabilizes command and address lines across high-density memory channels, enabling reliable population of all DIMM slots without signal degradation in large-scale virtualization hosts.
3. A 16GB capacity per module increases virtual machine density, allowing infrastructure to host more concurrent workloads while maintaining responsive memory headroom under heavy consolidation.
4. 2400MHz memory speed delivers consistent bandwidth for memory-intensive enterprise applications, accelerating database queries and in-memory analytics without creating bottlenecks.
5. Single Rank x4 organization optimizes per-DIMM latency and utilizes x4-wide DRAM devices to strengthen error containment, improving resilience of memory arrays in multi-socket architectures.

Why These Specs Matter

When you’re running a dense virtualization cluster or an in-memory database where every transaction counts, the M393A2K40CB1-CRC4Y doesn’t just fit the spec sheet—it actively prevents business risk. This DDR4-2400 Registered DIMM is engineered for the server world, and its four defining characteristics translate directly into uptime and performance. First, ECC error correction silently detects and fixes single-bit memory errors, meaning a random cosmic-ray flip won’t corrupt your SQL record or hypervisor state in the middle of a trading day. Second, the Registered signal buffer stabilizes the command bus, so you can populate all 24 DIMM slots without the memory controller crashing under electrical load—this is what makes 512 GB or 1 TB configurations realistic for a multi-tenant host. Third, the 1.2 V operating voltage dramatically lowers thermal output and power draw across a rack of servers; over a deployment of 100 nodes, that difference is a measurable cut in your cooling bill and carbon footprint. Finally, the single-rank x4 organization on a 16 GB module keeps the electrical load light and signal integrity high, allowing the memory controller to sustain 2400 MT/s with CL17 even when every channel is fully populated. In an in-memory analytics engine like SAP HANA, that combination of ECC protection, massive stable footprint, energy efficiency, and predictable low-latency bandwidth means your real-time dashboards stay accurate and responsive under pressure.

Endurance & Reliability

General Virtualization
For a typical hypervisor hosting mixed workloads, populate memory channels symmetrically to maximize bandwidth. Using this 16GB DDR4-2400 RDIMM, a dual-socket server with 12 DIMM slots per CPU should install 6 identical modules per processor (1 DIMM per channel) for 96GB per socket, balancing capacity and cost. Avoid mixing ranks and speeds to prevent the memory controller from down-clocking and degrading consistency for virtual machines.

In-Memory Database
In-memory databases such as SAP HANA or Redis demand high capacity and fault tolerance. Deploy these 16GB ECC Registered DIMMs at two per channel (2DPC) to reach 192GB per socket in a 12-slot server while still supporting rank interleaving. Choose single-rank x4 modules like this one for better signal integrity at 2DPC, and always configure identical kits across all memory channels to avoid non-uniform memory access latency that can impact query throughput.

High-Performance Computing
HPC applications exploit every byte of memory bandwidth, so populate one DIMM per channel for peak speed. In a dual-socket server with 8 channels each, install eight of these 16GB RDIMMs per CPU (128GB total per node) and leave remaining slots empty to sustain 2400MT/s without throttling. Pair this layout with balanced core-memory affinity in the job scheduler to keep all channels active, and match DIMMs by manufacturing date to minimize timing variations during large-scale MPI runs.

Verified Compatibility

Proven server-grade compatibility with Dell PowerEdge R760, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650. Stringently tested.

FAQ