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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 8 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 | Single Rank x8 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This Samsung M393A1K43BB1-CTD6Y is a server-grade DDR4-2666 Registered DIMM with ECC, specifically engineered for data integrity in virtualization platforms, in-memory databases, and mission-critical enterprise workloads. Its single-rank x8 configuration combined with Registered signal buffering ensures stable electrical loading on high-capacity memory channels, while ECC protection detects and corrects single-bit errors to prevent silent data corruption during sustained compute operations.
1. Error correction capability silently resolves single-bit memory faults, safeguarding transactional data integrity for round-the-clock enterprise databases.
2. Registered buffer architecture stabilizes command and address signals, permitting fully loaded memory channels without compromising operational reliability.
3. Low operating voltage minimizes thermals per stick, directly trimming data center cooling overhead and improving overall power efficiency.
4. The module’s high data rate keeps modern multi-core server processors well-fed, ensuring latency-sensitive virtual machines remain responsive under peak consolidation.
5. Single-rank layout offers fast uniform access, optimizing memory controller efficiency for real-time analytics and caching workloads.
The Samsung M393A1K43BB1-CTD6Y is a server-class Registered DIMM engineered for mission-critical enterprise workloads, and four key characteristics directly impact your daily operations. First, integrated ECC silently corrects single-bit errors caused by background radiation, which in a dense virtualization cluster prevents silent data corruption from crashing guest operating systems or corrupting financial transactions. Second, the registered buffer stabilizes command signals so you can fully populate all memory channels without timing degradation, a must when scaling an in-memory database like SAP HANA to terabytes. Third, 1.2V operation minimizes power draw and thermal load per module, lowering cooling expenditures across rack-scale deployments. Fourth, 2666MT/s bandwidth with CL19 latency delivers consistent 21.3 GB/s per channel, accelerating real-time analytics and high-frequency trading. For you, these translate into hardened data integrity, seamless scale-out capacity, and a measurably lower total cost of ownership.
Server Memory Capacity Planning Guide
This Samsung 8GB DDR4-2666 RDIMM (ECC Registered, 1.2V, CL19, single rank x8) is engineered for server-class stability and data integrity. Its ECC and registered buffer allow higher module counts and reliable operation under sustained workloads.
General Virtualization
For a typical hypervisor hosting mixed VMs, we recommend populating in multiples matching the CPU memory channels, ideally starting with six identical 8GB RDIMMs (48GB total) for a dual-socket hexa-channel platform. This balanced configuration provides sufficient headroom for moderate consolidation while leveraging ECC to prevent silent data corruption across guest workloads.
In-Memory Database
Low-latency mandates demand high capacity and uniform access. Deploy tightly matched sets of eight or more modules to maximize interleaving. A baseline of 8×8GB (64GB) can serve smaller Redis or SAP HANA footprints, but scaling to 16×8GB (128GB) ensures the entire dataset resides in RAM, avoiding NUMA penalties by populating all memory channels identically.
High-Performance Computing
HPC clusters prioritize bandwidth over sheer capacity. For compute nodes, configure a 6×8GB (48GB) or 8×8GB (64GB) symmetrical layout per dual-socket server to saturate all DDR4 channels. This approach delivers peak throughput for memory-bound simulations and avoids performance cliffs caused by unbalanced DIMM populations.
This server memory has been rigorously tested for compatibility with Dell PowerEdge R750, HPE ProLiant DL380 Gen10, and Lenovo SR650.
Q: Can I mix this M393A1K43BB1-CTD6Y with other memory modules of different brands or speeds?
A: Mixing with non-ECC or unbuffered modules will cause system instability. Always install identical RDIMMs with the same speed, rank, and timings. Even slight mismatches may prevent booting on server platforms.
Q: Is this memory compatible with my system?
A: This DDR4-2666 ECC Registered DIMM requires an Intel Xeon Scalable or AMD EPYC platform with a C620/X570 chipset that specifically supports RDIMMs. Verify motherboard QVL for your server model, not just the CPU generation.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server motherboard manual precisely. Typically, balance channels by installing identical DIMMs in matching slots per memory controller, starting with the farthest slots from the CPU to maximize signal integrity.
Q: Does this module support overclocking or XMP profiles?
A: No. As an enterprise ECC RDIMM, it operates strictly at JEDEC standard DDR4-2666 speeds with CL19 latencies. Overclocking is disabled to ensure data integrity in mission-critical server environments.
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 AFR, typically below 0.44%. Actual reliability depends on proper cooling and stable power delivery in your server chassis.