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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 128 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2V |
| RAM Speed | 2933MHz |
| 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 ECC and registered signaling is engineered for enterprise servers and memory-intensive virtualization platforms, where its quad-rank x4 organization maximizes capacity per channel while maintaining signal integrity for dense, data-critical workloads. The 1.2V operating voltage and CL21 latency ensure reliable, power-efficient error correction, making it ideal for in-memory databases and virtualized environments that demand uncompromising data integrity.
1. A 128-gigabyte capacity per module maximizes memory density in server nodes, enabling expansive virtualization and large in-memory database deployments without sacrificing physical space.
2. Integrated ECC corrects single-bit errors and detects multi-bit corruption, preserving data integrity for mission-critical workloads where even silent memory faults cannot be tolerated.
3. The register clock driver buffers address and command signals, stabilizing multi-module configurations and ensuring reliable operation across fully populated server memory channels.
4. Quad Rank x4 organization packs more DRAM per channel, allowing higher total memory footprints that sustain consistent performance under heavy consolidation of diverse enterprise workloads.
5. DDR4-2933 delivers robust bandwidth per channel, accelerating data throughput for latency-sensitive analytics and enabling faster query responses in virtualized environments.
The M386AAG40MM2-CVF is a server-grade DDR4 Registered DIMM built to eliminate the silent threats that undermine data center reliability. Its error-correcting code actively scrubs single-bit memory errors, preventing the silent data corruption that can propagate through a virtualized cluster and crash multiple guest machines or distort financial records without warning. The registered architecture buffers command and address signals, preserving signal integrity when you fully populate channels with this high-density 128GB module; that keeps dense in-memory database platforms like SAP HANA stable and responsive even under 2TB-and-beyond configurations. Quad-rank x4 organization, running at 2933MHz, supplies the sustained bandwidth needed when a hypervisor runs hundreds of concurrent virtual machines, avoiding the memory contention that stalls critical transactions. Meanwhile, the 1.2V operating voltage lowers thermal load across racks, shrinking cooling costs without sacrificing throughput. For your virtualized cluster or a real-time analytics engine demanding absolute uptime and fast data access, this module delivers higher VM density, guarantees data fidelity, and reduces total cost of ownership simply by making memory failures a non-issue.
General Virtualization
For dense server virtualization hosts, this 128GB Registered DIMM provides an excellent balance of capacity and cost-per-gigabyte. Deploying eight such modules in a dual‑socket system yields 1TB of ECC‑protected memory, comfortably supporting over 100 mid‑sized VMs. Enable memory interleaving and populate all channels identically to maximize throughput across the NUMA domains.
In-Memory Database
The quad‑rank x4 organization and ECC reliability make this RDIMM ideal for in‑memory databases like Redis or SAP HANA. A six‑module configuration (768GB total) on a single‑socket platform keeps large datasets resident in DRAM, drastically reducing query latency. Rank multiplication naturally increases rank interleaving, which improves sustained random access performance critical for OLTP workloads.
High‑Performance Computing
Registered DIMMs with 2933MT/s speed and CL21 latency suit bandwidth‑sensitive HPC simulations. Populate all eight or twelve memory channels of a dual‑socket node with one DIMM per channel (8×128GB = 1TB) to achieve maximum memory bandwidth without mixing ranks per channel. This uniform configuration minimizes timing variations and ensures predictable, repeatable performance across cluster nodes during MPI‑based workloads.
Rigorously tested server memory: compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10, Lenovo SR650.
Q: Can I mix this M386AAG40MM2-CVF with other memory modules of different brands or speeds?
A: Mixing RDIMMs of different brands or speeds is not recommended. This quad-rank module requires matched parameters for stable operation. Mixing may cause the system to default to the lowest common speed or fail POST, compromising server reliability.
Q: Is this memory compatible with my system?
A: This 128GB DDR4-2933 registered ECC RDIMM is designed for Intel Xeon Scalable and AMD EPYC platforms. Verify your server board supports quad-rank x4 modules and 1.2V RDIMMs with a 2933MT/s transfer rate under the specific CPU configuration.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical quad-rank modules following your server manual. Generally, balance channels by installing in the farthest slot from the CPU per channel first. For two processors, distribute symmetrically to maximize memory bandwidth and interleaving.
Q: Does this module support overclocking or XMP profiles?
A: No. As an enterprise registered ECC module, it adheres strictly to JEDEC DDR4-2933 timings. It does not support XMP or overclocking; such features would violate the signal integrity and error correction requirements of server environments.
Q: What warranty and typical failure rate can I expect?
A: This module includes a one-year warranty. Engineered for enterprise workloads with stringent ECC screening, typical annualized failure rates are extremely low, far below commodity memory, ensuring sustained mission-critical uptime under continuous operation.