Secure payments
Standard refund policy
Trade Assurance
| Product Type | Memory Module |
|---|---|
| Memory Capacity | 256 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2 V |
| RAM Speed | 2933 MHz |
| RAM Standard | DDR4-2933/PC4-23400 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL21 |
| Rank | Octal Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
Featuring a 256GB DDR4-2933 registered ECC architecture, this RDIMM is purpose-built for enterprise servers and memory-intensive workloads such as virtualization and in-memory databases. Its Octal Rank x4 configuration combined with RCD buffering ensures superior signal integrity and maximum capacity per channel, while ECC safeguards mission-critical data integrity at scale.
1. Extreme per-module density allows a single server node to host substantially more virtual machines, directly lowering software licensing and rack-space costs in dense data centers.
2. Integrated error correction eliminates silent data corruption at scale, safeguarding financial transactions and long-running scientific computations against costly memory faults.
3. The register buffer restores clean command and address signaling across fully loaded memory channels, keeping multi-socket platforms stable even with all slots populated.
4. Octal Rank x4 organization multiplies internal bank concurrency, sustaining high command throughput when dozens of cores simultaneously access massive in-memory datasets.
5. The elevated transfer rate delivers the consistent high bandwidth required by real-time analytics and caching layers, preventing memory bottlenecks under peak query loads.
Built for mission-critical servers, the Samsung M386ABG40M5B-CYFCQ redefines what enterprise memory should deliver by addressing the real-world failures that keep IT architects awake. Its Registered DIMM architecture with octal rank x4 organization directly confronts signal degradation in densely populated systems: when you are packing terabytes across a virtualized cluster running dozens of VMs per node, the on-chip buffering stabilizes command and address lines, letting you populate all 24 DIMM slots on a dual-socket platform without sacrificing the 2933MT/s speed. That speed, paired with the massive 256GB capacity per module, means an in-memory database like SAP HANA can hold larger working sets closer to the CPU, turning sluggish disk-dependent analytics into real-time insight. Meanwhile, ECC error correction is not a feature, it is a shield. In a financial trading environment, a single undetected bit-flip caused by background radiation can corrupt a transaction ledger or silently crash a hypervisor. With this module, single-bit errors are detected and corrected in hardware, preventing silent data corruption before it affects your application. The low 1.2V operating voltage further ensures that scaling to multi-terabyte footprints does not push thermal budgets beyond what existing data center cooling can handle, keeping your total cost of ownership predictable while performance stays absolute.
General Virtualization
For dense virtualization hosts, this 256 GB RDIMM module enables maximum consolidation with minimal DIMM slots. Deploy six modules per dual‑socket server to reach 1.5 TB, a sweet spot for 150–200 mid‑sized VMs, while keeping memory channels balanced with one DIMM per channel (1DPC) for optimal 2933 MT/s speed.
In‑Memory Database
In‑memory platforms such as SAP HANA or Redis demand both capacity and data integrity, making Registered ECC mandatory. A four‑module configuration provides 1 TB, ideal for scaling large analytical datasets without swapping. Scale to eight modules for 2 TB to support enterprise‑grade, mission‑critical in‑memory workloads with robust error correction.
High‑Performance Computing
HPC clusters processing weather models or molecular dynamics rely on high bandwidth and low latency. Populate all six memory channels per socket with one 256 GB module per channel (six modules per node) to deliver 1.5 TB of balanced bandwidth; the octal‑rank design maximizes capacity per channel without sacrificing the 2933 MT/s rank‑interleaving benefits, sustaining heavy parallel I/O.
Validated for server use – rigorously tested and compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3, and similar DDR4-2933 Registered platforms.
Q: Can I mix this M386ABG40M5B-CYFCQ with other memory modules of different brands or speeds?
A: Mixing modules of different brands or speeds is not advised in server environments. It can cause instability, force lower speeds, and compromise ECC functionality. For guaranteed reliability, use identical M386ABG40M5B-CYFCQ modules across all channels.
Q: Is this memory compatible with my system?
A: This 256GB DDR4-2933 ECC Registered RDIMM is compatible with servers using Intel Xeon Scalable (2nd Gen and newer) or AMD EPYC 7002/7003 series processors. Verify your motherboard supports 288-pin DDR4 RDIMMs and 256GB capacity per slot.
Q: What is the recommended DIMM population order for optimal performance?
A: Optimal population follows the server motherboard manual, typically filling identical DIMMs per channel, starting with the farthest slot from the CPU. Balance memory across all memory channels to maximize bandwidth and avoid performance penalties.
Q: Does this module support overclocking or XMP profiles?
A: No, this ECC Registered server memory does not support overclocking or XMP. It operates strictly at JEDEC standard DDR4-2933 with CL21 timings for maximum stability and data integrity in enterprise workloads.
Q: What warranty and typical failure rate can I expect?
A: This module comes with a 1-year warranty. As a rigorously tested Samsung RDIMM, it exhibits an extremely low annualized failure rate (AFR) well under 0.5%, designed for 24/7 mission-critical operations.