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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 128 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 | Quad Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This 128GB DDR4-2933 RDIMM with Quad Rank x4 organization is purpose-built for enterprise servers handling memory-intensive workloads like virtualization and large-scale in-memory databases, delivering maximum capacity per channel while its registered signal architecture maintains stability under heavy load. The module’s ECC and 1.2V low-power design, combined with Quad Rank interleaving, reduce access latency and provide robust single-bit error correction to safeguard data integrity in mission-critical deployments.
1. A massive 128GB capacity per module maximizes memory density per server node, enabling more virtual machines and large in-memory databases without scaling out hardware.
2. Integrated ECC corrects single-bit errors and detects multi-bit faults, safeguarding data integrity in mission-critical enterprise applications and financial transactions.
3. Registered signal technology buffers command and address lines, stabilizing high-capacity memory configurations essential for multi-socket servers with numerous DIMMs.
4. Quad Rank x4 organization populates multiple ranks on a single DIMM, boosting memory bandwidth utilization under heavy parallel workloads like virtualization and data analytics.
5. A speed of 2933 megatransfers per second delivers high throughput, reducing latency in memory-intensive operations such as real-time processing and large-scale caching.
The M386AAG40MMB-CVFCQ is a 128GB DDR4-2933 Registered DIMM purpose-built for enterprise servers, and its four defining characteristics directly solve the most persistent data-center challenges. First, the massive 128GB density means you can provision far more virtual machines per host or fit an entire transactional database into memory, eliminating the latency penalty of swap-driven storage. Second, ECC error correction silently catches and corrects single-bit flips, a critical safety net when a stray cosmic particle could otherwise corrupt a financial calculation or a genomic research dataset. Third, the Registered buffer architecture stabilizes command and address signals, allowing you to populate every DIMM slot in a dual-socket system without the signal degradation that leads to random crashes under load. Fourth, the Quad Rank x4 organization interleaves operations across four internal ranks, maximizing the practical bandwidth of the 2933 MT/s interface for heavily concurrent workloads. In a virtualized cluster, this combination guarantees clean live migrations and preserves guest uptime even during hardware stress. For an in-memory analytics engine, it sustains real-time query throughput and data integrity at scale, transforming raw capacity into nonstop operational confidence.
General Virtualization
This 128GB DDR4-2933 Registered ECC DIMM is ideal for dense server virtualization. To maximize capacity while maintaining balanced NUMA performance, populate every memory channel in each processor with one module (1 DIMM per channel). A typical dual-socket server with twelve channels equipped with twelve of these modules delivers 1.5 TB of reliable memory, comfortably hosting hundreds of VMs.
In-Memory Database
For demanding in-memory databases, data integrity and low latency are paramount. Install one 128GB RDIMM per memory channel to run at the full 2933 MT/s speed while avoiding bandwidth trade-offs from multiple ranks. Filling every channel yields multi-terabyte capacity with ECC protection, ensuring responsive real-time analytics.
High-Performance Computing
Memory-intensive HPC workloads, such as genomic simulations or large-scale CAE, benefit from these quad-rank, high-capacity modules. Populate one DIMM per channel across all available memory channels to maximize both aggregate bandwidth and total capacity. A fully populated 8- or 12-channel server with 128GB RDIMMs provides a substantial 1–1.5 TB memory pool for large datasets without sacrificing speed.
Proven compatible with Dell PowerEdge R740, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, and more.
Q: Can I mix this M386AAG40MMB-CVFCQ with other memory modules of different brands or speeds?
A: Mixing RDIMM brands or speeds is strongly discouraged in servers. It risks signal integrity issues, POST failures, and instability. Identical part numbers ensure validated coherency, especially for quad-rank, registered ECC configurations.
Q: Is this memory compatible with my server system?
A: Compatibility depends on your server's platform and BIOS. It requires a DDR4 RDIMM slot, ECC support, and 2933 MT/s capability. Verify against your system's Qualified Vendor List (QVL) or consult the server manufacturer's memory configurator for validated support.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server board's manual, typically populating identical quad-rank RDIMMs in matched sets per channel, starting with slot 1. Balanced loading across memory channels maximizes throughput, while populating all channels may limit speed to 2666 MT/s.
Q: Does this module support overclocking or XMP profiles?
A: No, it operates at standard JEDEC DDR4-2933 timing at 1.2V. Server-class registered ECC memory prioritizes data integrity and stability; overclocking and XMP are not supported and would violate operational specifications.
Q: What warranty and typical failure rate can I expect?
A: This module carries a 1-year warranty. Enterprise-grade ECC RDIMMs exhibit an extremely low annualized failure rate (AFR), typically below 0.3% under proper conditions, ensuring high reliability for mission-critical workloads.