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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 128 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2V |
| RAM Speed | 2400MHz |
| RAM Standard | DDR4-2400/PC4-19200 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL17 |
| Rank | Octal Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This 128GB DDR4-2400 RDIMM is purpose-built for enterprise server platforms, delivering the registered signaling and ECC data integrity essential for virtualization clusters and memory-intensive databases. Its octal-rank x4 organization enables maximum density per channel, while the CL17 latency and 1.2V operation balance throughput and energy efficiency in 24/7 data center deployments.
1. 128GB capacity enables massive virtualization density, allowing more VMs per physical server without resorting to costly scale-out.
2. ECC protection silently corrects single-bit errors, essential for financial transactions and in-memory databases requiring uncompromising data integrity.
3. Registered signal buffering stabilizes high-capacity configurations, ensuring reliable operation even with all DIMM slots populated in a 2-socket server.
4. Octal Rank x4 design maximizes memory footprint per channel, letting infrastructure teams saturate server memory capacity for large in-memory workloads.
5. 2400MHz clock speed delivers balanced bandwidth, efficiently feeding multi-core server CPUs for consistent throughput in virtualized and containerized environments.
Designed for server environments, the M393AAK40B41-CTC DDR4 RDIMM addresses the exact challenges that keep data center architects awake at night. Its ECC technology continuously corrects single-bit errors before they cascade into application crashes or data corruption, which is non-negotiable when you are running an in-memory database like Redis or SAP HANA where every transaction must be absolutely trustworthy. The registered interface buffers command and address signals so you can fully populate all memory channels with massive 128 GB modules without signal degradation—this directly translates to higher virtual machine density in a VMware or Hyper-V cluster, letting you consolidate workloads without sacrificing stability. Delivering that capacity as an octal-rank x4 configuration ensures dense, server-grade addressing that sustains predictable latency even when multiple analytics containers hammer the memory bus simultaneously. The 1.2 V operating voltage keeps power and cooling costs in check across a fleet of servers, while the 2400 MHz speed provides the consistent bandwidth essential for streaming large datasets through business intelligence tools. Ultimately, this module turns memory from a potential point of failure into a resilient, high-capacity platform that keeps your critical virtualized and data-intensive services running without interruption.
General Virtualization
A dual-socket server with twelve memory channels per CPU can house 24 of these 128 GB RDIMMs, reaching 3 TB total capacity. Install one DIMM per channel to sustain the full 2400 MHz speed and avoid rank-bus downclocking, which provides ample memory headroom for dense VM deployments without performance cliffs.
In-Memory Database
For real-time analytics and in-memory databases, populate every available channel with exactly one 128 GB module (24 DIMMs total) to keep latency minimal and bandwidth high. Placing two octal-rank DIMMs on the same channel would force a speed reduction, so this 3 TB single-DIMM-per-channel layout preserves peak 2400 MT/s access.
High-Performance Computing
Maximize aggregate throughput by filling all channels with a single 128 GB RDIMM per slot on a two-socket node, again achieving 3 TB. Refrain from using the second DIMM slot per channel to prevent downclocking and maintain stable sustained bandwidth for parallel scientific workloads.
Rigorously tested, compatible with Dell PowerEdge R740, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, and more.
Q: Can I mix this M393AAK40B41-CTC with other memory modules of different brands or speeds?
A: Mixing brands or speeds is strongly discouraged in server environments. For guaranteed stability, use identical modules with matched part numbers, speeds, and rank configurations. Mixing may cause ECC errors or degraded performance.
Q: Is this memory compatible with my system?
A: This 128GB DDR4-2400 RDIMM is compatible with Intel Xeon Scalable (Purley+) and AMD EPYC 7000/7002 series platforms that support registered ECC memory. Always verify your server's Qualified Vendor List for exact compatibility.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server vendor's population guide. Typically, populate one DIMM per channel starting with the slot farthest from the CPU. For this octal-rank module, observe per-channel limits to maintain 2400MT/s full speed.
Q: Does this module support overclocking or XMP profiles?
A: No, this is a JEDEC-compliant RDIMM and does not support overclocking or XMP. It runs at a fixed 2400MT/s with CL17 timing, prioritizing data integrity and 24/7 reliability over performance tuning.
Q: What warranty and typical failure rate can I expect?
A: This module includes a 1-year warranty. Enterprise-grade RDIMMs typically exhibit an annualized failure rate below 0.3%. Our thorough screening processes ensure low DOA rates and robust long-term reliability.