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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 32 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2 V |
| RAM Speed | 2666 MHz |
| RAM Standard | DDR4-2666/PC4-21300 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL19 |
| Rank | Dual Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This server-grade 32GB DDR4-2666 RDIMM leverages registered signaling and ECC to safeguard data integrity under sustained workloads, making it optimal for virtualization, in-memory databases, and dense enterprise deployments. The dual-rank x4 organization elevates bandwidth utilization and delivers consistent CL19 latency, ensuring reliable, high-capacity operation across dual-socket server platforms.
1. A 32GB capacity per module allows dense memory configurations in servers, supporting larger virtualization footprints and reducing the need for costly physical node expansion.
2. DDR4 technology delivers improved energy efficiency, lowering operational power consumption in data centers while maintaining the performance headroom required for always-on workloads.
3. Integrated ECC functionality detects and corrects single-bit errors in real time, preserving data integrity in transactional databases and preventing silent corruption during long-running compute tasks.
4. Registered signal buffering stabilizes high-capacity memory channels, enabling servers to scale beyond unbuffered limitations without compromising command and address integrity under full load.
5. Dual Rank x4 organization interleaves memory accesses across multiple banks, sustaining peak bandwidth delivery for concurrent analytics queries and virtualized application throughput.
The Samsung M393A4K40CB2-CTD7Y is a 32GB DDR4-2666 Registered ECC RDIMM built to deliver server-class reliability where memory errors directly threaten business continuity. In a virtualized cluster running dozens of VMs, ECC error correction is non-negotiable—it instantly corrects single-bit flips caused by background radiation, preventing silent data corruption that could crash a hypervisor or distort a financial database transaction. This means your ESXi hosts stay online, and your data integrity remains absolute. Registered signal buffering lets you fully populate all DIMM slots without overloading the memory controller, a critical advantage when scaling dense 2-socket servers for in-memory databases like Redis or SAP HANA. The Dual Rank x4 architecture uses interleaving to sustain higher bandwidth and lower latency under simultaneous read/write demands, keeping transactional queries swift even under multi-tenant pressure. Finally, the 1.2V operating voltage and CL19 timing strike a deliberate balance between energy efficiency and responsive throughput, reducing power and cooling costs in 24/7 data centers without compromising performance. For IT teams fighting unpredictable failures and performance bottlenecks, this module eliminates the very pain points that threaten uptime and scalability.
General Virtualization
Deploy this 32GB DDR4-2666 ECC RDIMM in balanced, multi-channel configurations to maximize VM density and stability. For a typical dual-socket server with eight memory channels per CPU, install one identical module per channel—totaling 16 DIMMs for 512GB—to sustain full memory bandwidth under NUMA-aware hypervisor scheduling.
In-Memory Database
Populate all available channels with these dual-rank registered modules to reach terabyte-scale capacities while preserving low latency. The 1.2V operating voltage and error correction ensure data integrity for real-time analytics, and filling all channels delivers the aggregate throughput required by memory-constrained database engines.
High-Performance Computing (HPC)
Equip each compute node with a single DIMM per channel to avoid speed downgrades, maintaining the rated 2666 MT/s and CL19 timing. For capacity-hungry simulations, expand to 8 or 16 modules per node, leveraging registered ECC and 288-pin signaling to sustain reliable, high-bandwidth operations across sustained parallel workloads.
Rigorously tested, compatible with Dell PowerEdge R740/R750, HPE DL380 Gen10, Lenovo SR650, and more.
Q: Can I mix this M393A4K40CB2-CTD7Y with other memory modules of different brands or speeds?
A: Mixing with different brands or speeds on a server platform is not recommended; it may cause stability issues. For optimal reliability, use identical modules with the same Samsung part number and speed grade across all channels.
Q: Is this memory compatible with my system? For example, Intel Xeon or AMD EPYC platforms.
A: This Samsung 32GB DDR4-2666 Registered ECC RDIMM is compatible with Intel Xeon Scalable and AMD EPYC servers supporting DDR4-2666 RDIMM. Always verify your motherboard’s qualified vendor list (QVL) for exact compatibility.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server motherboard manual for balanced memory configurations. Typically, populate identical DIMMs per channel, starting with the farthest slot from the CPU (e.g., A1, B1, C1, D1) to maximize interleaving and bandwidth.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a JEDEC-compliant server RDIMM running at 2666 MT/s with CL19. It does not support overclocking or XMP profiles and is designed for 24/7 enterprise reliability at standard speeds.
Q: What warranty and typical failure rate can I expect?
A: This Samsung module includes a 1-year warranty. Enterprise-grade RDIMMs have an extremely low annualized failure rate, typically below 0.2%, ensuring long-term reliability in properly cooled server environments.