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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 64 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 | Quad Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This 64GB DDR4-2400 RDIMM is specifically engineered for memory-intensive server platforms handling virtualization, in-memory databases, and mission-critical enterprise workloads. Its quad-rank x4 organization maximizes per-module density for scalable capacity, while the registered ECC architecture ensures superior signal integrity and end-to-end data protection in multi-DIMM configurations.
1. ECC protection automatically detects and corrects single-bit memory errors, safeguarding transactional integrity and preventing silent data corruption in mission-critical enterprise applications.
2. Registered signal buffering stabilizes heavy memory loads across multiple DIMMs, enabling dense server configurations without compromising command/address integrity under sustained throughput.
3. Quad Rank x4 organization fully populates the memory ranks per channel, maximizing bandwidth utilization and virtual machine consolidation ratios in hyper-converged infrastructures.
4. 64GB per module dramatically expands total system memory footprint, allowing extensive in-memory databases and large-scale virtualization to run with minimal storage swap latency.
5. 2400MHz operation delivers substantial sequential throughput and low-latency access, accelerating real-time analytics and high-frequency transactional processing where every microsecond counts.
The Samsung M393A8K40B21-CTC4Q is a server-grade DDR4 RDIMM, purpose-built for mission-critical enterprise workloads where downtime and data corruption are unacceptable. Its 64GB capacity, Registered signal buffering, ECC error correction, and Quad Rank x4 architecture collectively address the most pressing pain points of data center operators.
In a dense virtualized cluster running dozens of VMs per host, every gigabyte counts. The 64GB density allows you to pack more virtual machines onto a single node without sacrificing performance, while the Registered (buffered) design stabilizes signal integrity when all 24 DIMM slots are fully populated—preventing the boot failures and random crashes that plague unbuffered memory under heavy load. Meanwhile, ECC silently corrects single-bit errors caused by cosmic radiation or electrical noise. For a financial database processing millions of transactions, this is the difference between a correct ledger and a silent corruption that cascades into audit failures. The Quad Rank x4 organization, though slightly higher in latency, maximizes capacity per channel, which is critical for in-memory analytics platforms like SAP HANA. Here, loading a terabyte-scale dataset into RAM demands the highest possible density per DIMM to keep the dataset hot and queries lightning fast. Finally, the 1.2V operating voltage lowers the thermal envelope in a fully racked server farm, reducing cooling costs and improving long-term reliability—your facility’s power bill and hardware lifespan both benefit directly. This memory isn’t just a component; it’s an insurance policy for data integrity and a performance multiplier for virtualization and real-time analytics.
General Virtualization
For typical virtualization hosts, install at least one of these 64GB Registered DIMMs per memory channel to avoid bandwidth bottlenecks. An 8‑module layout (512GB) across two CPU sockets comfortably supports 30–50 general‑purpose VMs, while scaling to 16 modules delivers 1TB for dense consolidation without sacrificing ECC reliability.
In‑Memory Database
Deploy these quad‑rank 64GB RDIMMs across all available DIMM slots to maximize total capacity. A fully populated server can reach several terabytes, allowing entire database working sets to reside in RAM for ultra‑low latency. Populating symmetrically across all memory channels ensures stable, predictable performance under extreme transaction loads.
High‑Performance Computing (HPC)
For bandwidth‑sensitive workloads, use a one‑DIMM‑per‑channel configuration to sustain the full DDR4‑2400 speed. This layout avoids signal loading penalties while providing abundant capacity per node for large simulation datasets. Pairing 64GB RDIMMs with balanced channel population minimizes access latency and keeps compute cores fed efficiently.
This server memory is rigorously tested for compatibility with Dell PowerEdge R740 and R640, HPE ProLiant DL380 Gen10, Lenovo SR650.
Q: Can I mix this M393A8K40B21-CTC4Q with other memory modules of different brands or speeds?
A: Mixing is not recommended for server environments. Mismatched modules can cause stability issues and may force all DIMMs to the lowest common speed, compromising strict platform validation.
Q: Is this memory compatible with my system?
A: This DDR4-2400 ECC Registered RDIMM is compatible with Intel Xeon E5-2600 v4 and Scalable platforms, as well as AMD EPYC 7001 series systems that require registered memory. Verify your motherboard's qualified vendor list.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical Quad Rank x4 DIMMs in sets of 4 or 8 across memory channels for balanced interleaving. Always follow the slot numbering color code in your server's service manual to maximize bandwidth.
Q: Does this module support overclocking or XMP profiles?
A: No. As a JEDEC standard ECC Registered server module, it strictly adheres to the DDR4-2400 profile and does not support overclocking or Intel XMP to ensure data integrity and 24/7 reliability.
Q: What warranty and typical failure rate can I expect?
A: This Samsung enterprise module comes with a one-year warranty. It delivers an extremely low annualized failure rate (AFR), typically less than 0.5%, thanks to rigorous component screening and burn-in testing.