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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 128 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2 V |
| RAM Speed | 3200 MHz |
| RAM Standard | DDR4-3200/PC4-25600 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL22 |
| Rank | Quad Rank |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This 128GB DDR4-3200 RDIMM leverages a registered signal type and quad-rank topology to deliver exceptional data integrity and density for enterprise-class servers and virtualization clusters. Its ECC error correction and 1.2V low-power operation make it particularly suited for in-memory databases and memory-intensive hypervisor workloads that demand unwavering stability under sustained load.
1. ECC memory detects and corrects single-bit errors in real time, preserving data integrity for financial transactions and database operations where even a single flipped bit is unacceptable.
2. Registered signal type buffers the command and address lines, stabilizing signal integrity across high-density server nodes so you can fully populate all DIMM slots without compromising reliability.
3. Quad Rank organization packs four independent sets of memory chips onto a single module, maximizing capacity per channel to support dense virtualization and large in-memory workloads without sacrificing access efficiency.
4. A 128-gigabyte module enables exceptional memory density per server, empowering IT teams to provision substantially more virtual machines per physical host and reduce software licensing overhead.
5. DDR4-3200 speed supplies the sustained throughput needed by multi-core server CPUs, accelerating parallel processing tasks like real-time analytics, rendering farms, and high-concurrency web services.
The M386AAG40BM3-CWEZY is a 128GB DDR4-3200 RDIMM purpose-built for the data center. Its four cornerstones—immense density, registered buffering, ECC, and quad-rank interleaving—resolve critical pain points. In dense virtualization clusters, a single 128GB module allows you to allocate substantial memory to dozens of VMs without consuming every DIMM slot, safeguarding scalability. The onboard register then ensures signal integrity even when all channels are fully populated, eliminating hypervisor crashes caused by electrical loading. For in-memory databases such as SAP HANA or Redis, the integrated ECC silently corrects single-bit errors, protecting transactional consistency where a flipped bit could mean a corrupted financial record. Meanwhile, the quad-rank design and 3200MT/s speed boost memory-level parallelism, effectively lowering query latency for real-time analytics. A 1.2V operating voltage keeps power draw minimal. Every feature translates directly to uptime, data fidelity, and operational efficiency.
The 128GB DDR4-3200 ECC RDIMM (Quad Rank) is a server module built for high-density memory configurations. Follow these capacity planning guidelines for key workloads.
General Virtualization
Populate one DIMM per memory channel to sustain the 3200MT/s speed. Eight modules in an 8-channel server provide 1TB, easily supporting dozens of virtual machines. If more capacity is needed, install a second DIMM per channel, accepting a typical speed drop to 2933MT/s.
In-Memory Database
Fill all DIMM slots to achieve maximum capacity. A fully populated 16-slot server can reach 2TB, keeping entire databases in RAM. With two DIMMs per channel, the memory may throttle to 2666MT/s, but capacity is the overriding priority for in-memory workloads.
High Performance Computing
For HPC, bandwidth is crucial. Install a single Quad Rank 128GB DIMM per channel to maintain 3200MT/s. A 16-channel system yields 2TB at peak bandwidth. Only populate a second DIMM per channel if your simulations demand more memory and you have validated the bandwidth reduction.
This server memory is rigorously tested, compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2, and more.
Q: Can I mix this M386AAG40BM3-CWEZY with other memory modules of different brands or speeds?
A: Mixing modules of different brands or speeds is not recommended for registered server memory. To ensure signal integrity and stability, populate with identical part numbers across all channels.
Q: Is this memory compatible with my system?
A: It is compatible with servers supporting DDR4-3200 registered ECC DIMMs, such as Intel Xeon Scalable Gen 2/3 or AMD EPYC 7002/7003 platforms. Verify your board's RDIMM support and memory QVL.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical quad-rank DIMMs symmetrically across memory channels, usually filling slots farthest from the CPU first per channel. Refer to your server's population guide for balanced interleaving.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a server-class JEDEC-compliant RDIMM running at standard DDR4-3200 with CL22. It does not support overclocking or XMP profiles; enterprise environments prioritize stability.
Q: What warranty and typical failure rate can I expect?
A: This module includes a one-year warranty. As an enterprise-grade product, it exhibits a very low annualized failure rate under proper thermal and electrical conditions, ensuring high reliability.