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| Model | M393A4K40BB2-CTD6Q |
|---|---|
| Product Type | Memory Module |
| Compliance Standards | CE,WEEE,RoHS |
| Memory Capacity | 32 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2V |
| RAM Speed | 2666MHz |
| 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 |
Designed for enterprise servers and data‑center platforms, this Samsung M393A4K40BB2‑CTD6Q 32 GB DDR4‑2666 Registered DIMM is purpose‑built for memory‑intensive workloads such as virtualization, in‑memory databases, and transactional processing where data integrity is paramount. Its Dual‑Rank x4 organization maximizes bank‑level parallelism and throughput, while ECC with registered signaling delivers robust signal integrity and single‑bit error correction across dense, multi‑DIMM configurations.
1. The 32GB capacity per module allows for denser memory configurations, directly raising the ceiling on virtual machine consolidation and in-memory database performance per server node.
2. Integrated ECC actively corrects single-bit errors, preserving transactional integrity without downtime—a non-negotiable foundation for financial processing and enterprise database environments.
3. Registered buffering decouples the memory bus load, empowering multi-socket servers to run all channels fully populated and stable under extreme memory capacities required by large-scale virtualization.
4. Dual Rank x4 architecture enables rank interleaving that saturates the memory channel, delivering higher sustained bandwidth essential for predictable, low-jitter performance in software-defined storage clusters.
5. The 2666MT/s throughput achieves a balanced speed grade for dense server deployments, ensuring smooth data flow for real-time analytics pipelines without pushing thermal and power budgets past the sweet spot.
When every transaction, query, or virtual machine instance demands absolute reliability, the M393A4K40BB2-CTD6Q proves essential. As a 32GB DDR4-2666 Registered DIMM with ECC, it directly addresses the top pain points of enterprise server environments. First, ECC error correction continuously detects and corrects single-bit memory errors that naturally occur due to cosmic radiation or electrical noise—for an in-memory database like SAP HANA, this prevents silent data corruption that could propagate into financial reports or inventory records. Second, the Registered (buffered) architecture uses an onboard register chip to stabilize command and address signals, enabling you to fully populate all memory channels without signal degradation, which is critical when running dozens of virtual machines on a single hypervisor host. Third, the Dual Rank x4 organization enables rank interleaving, overlapping memory accesses across two ranks to boost effective bandwidth; in virtualization clusters, this means smoother live migration and lower latency under heavy multi-tenant workloads. Fourth, the 32GB capacity at a power-efficient 1.2V allows denser configurations without excessive thermal load, so your 2-socket server can comfortably host large-scale VDI or containerized microservices while maintaining system stability and energy efficiency.
General Virtualization
For a typical hypervisor hosting multiple VMs, memory density and reliability are key. Populate the server with 8 or 16 identical M393A4K40BB2-CTD6Q modules to reach 256 GB or 512 GB, following the platform’s balanced DIMM-per-channel guidelines (e.g., one or two DIMMs per channel). The registered ECC design ensures data integrity during live migrations and memory overcommitment, making it a safe, standard choice for mixed workloads.
In-Memory Database
To feed latency-sensitive platforms like Redis or SAP HANA, configure all memory channels symmetrically with this dual-rank RDIMM — for instance, 12 x 32 GB modules in a dual-socket server to deliver 384 GB of low-latency capacity. Because each module operates at 2666 MHz with CL19, the setup maintains consistent performance under heavy in-memory analytics, while ECC actively prevents silent data corruption that would otherwise require cache rebuilds.
High-Performance Computing (HPC)
Maximize bandwidth by populating one DIMM per channel across all available channels; with this 32 GB module, a single-socket 8-channel platform yields 256 GB with optimal throughput. The registered signaling allows dense multi-DIMM configurations if capacity-bound jobs (e.g., CFD or weather models) demand 512 GB, but pure throughput tasks benefit from the 2666 MT/s dual-rank architecture, and ECC ensures long-running simulation results remain accurate.
Rigorously tested server memory, compatible with Dell PowerEdge R740/R750, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, Supermicro X11DPi-NT.
Q: Can I mix this M393A4K40BB2-CTD6Q with other memory modules of different brands or speeds?
A: Mixing is not recommended for server environments. All modules should match in speed, rank, and latency to maintain signal integrity and avoid ECC errors or system instability.
Q: Is this memory compatible with my system?
A: It is compatible with servers using Intel Xeon Scalable or AMD EPYC platforms that support DDR4-2666 Registered ECC RDIMMs. Verify 288-pin slots and 1.2V operation.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical DIMMs per memory channel, starting with the slots furthest from the CPU. Always follow the motherboard’s population guide to enable balanced channel interleaving.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a server-grade Registered ECC module designed for stability at JEDEC standard timings. Overclocking and XMP are not supported and can compromise data integrity.
Q: What warranty and typical failure rate can I expect?
A: This module includes a 1-year warranty. The annualized failure rate is typically less than 0.5% under standard operating conditions, reflecting its enterprise-grade reliability.