Secure payments
Standard refund policy
Trade Assurance
| Product Type | Memory Module |
|---|---|
| Compliance Standards | |
| 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 x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This 128GB DDR4-3200 RDIMM with ECC and a quad-rank x4 organization is engineered for high-density server platforms, delivering exceptional memory capacity and data integrity for demanding workloads such as virtualization, in-memory databases, and enterprise resource planning. Its registered signal type ensures stable operation under heavy load by reducing the electrical burden on the memory controller, while the quad-rank design maximizes per-channel capacity without sacrificing the 3200MT/s speed at a reliable CL22 latency.
1. A 128GB capacity per module maximizes memory density in server nodes, allowing expansive in-memory databases and high-density virtualization without sacrificing precious DIMM slots.
2. DDR4-3200 transfer rate supplies the sustained bandwidth required for real-time analytics and heavy multi-tenant workloads, preventing data bottlenecks under concurrent access.
3. ECC protection actively detects and corrects single-bit errors, preserving long-running computational integrity and guarding against silent data corruption in mission-critical operations.
4. Registered signal architecture stabilizes high-capacity memory configurations by buffering address and command signals, enabling reliable population of all channels in large-scale rack deployments.
5. Quad Rank x4 organization packs more DRAM banks per DIMM, boosting parallelism within each channel to maintain consistent transaction throughput under extreme virtual machine consolidation.
The M386AAG40AM3-CWEZQ is a server-grade DDR4 RDIMM engineered for enterprise workloads where reliability and capacity directly impact business outcomes. Its 128GB capacity per module allows you to pack more virtual machines into each host, reducing server sprawl and power costs in virtualized clusters such as VMware or Hyper-V. The DDR4-3200 speed delivers 25.6 GB/s of bandwidth per channel, which means in-memory databases like SAP HANA or Redis can process real-time transactions with lower latency, accelerating financial trading platforms or customer analytics. ECC protection actively corrects single-bit errors, preventing silent data corruption that could crash a critical database or compromise compliance records during continuous operation. The registered signal buffer stabilizes large memory arrays, giving you the confidence to fully populate all DIMM slots without sacrificing stability in dense rack servers. Quad Rank x4 construction achieves that massive 128GB density on a single stick, crucial for storage servers or hyperconverged nodes that demand enormous memory footprints but have limited physical slots. These features translate into uncompromised data integrity, uninterrupted service, and the headroom to scale memory-intensive applications safely.
General Virtualization
For a dual-socket virtualization host, populate 16 of these 128 GB RDIMMs across 16 DIMM slots (2 DIMMs per channel over 8 channels) to reach 2 TB total memory while preserving balanced memory bandwidth. This configuration supports high VM density for mixed workloads without throttling, and leaves half the slots free for future growth. Stick to identical modules to avoid training issues with quad-rank registered DIMMs.
In-Memory Database
Deploy a single-socket server with all 8 channels filled—using 8 modules yields 1 TB of capacity, ideal for large Redis or SAP HANA instances. ECC protection guards against data corruption, while the 3200 MT/s speed and CL22 latency keep query response times low. Avoid mixing quad-rank DIMMs on the same channel to prevent speed downgrades.
High-Performance Computing
Maximize per-core bandwidth by installing one DIMM per channel across both sockets, aiming for 16 modules (2 TB) in fat-node clusters. The registered ECC design ensures signal integrity during long-running simulations. Synchronize population order exactly with the platform’s memory-mirroring or rank-sparing rules if resilience is prioritized over raw capacity.
Rigorously tested, this 128GB DDR4-3200 RDIMM is compatible with Dell R750, HPE DL380 Gen10+, Lenovo SR650 V2, and similar servers.
Q: Can I mix this M386AAG40AM3-CWEZQ with other memory modules of different brands or speeds?
A: Mixing registered DIMMs of different brands or speeds is not recommended. Mismatched ranks, timings, or operating voltages can cause POST failures or stability issues in server environments. For reliable operation, always install identical modules.
Q: Is this memory compatible with my system?
A: This 128GB DDR4-3200 RDIMM targets Intel Xeon Scalable and AMD EPYC platforms supporting 288-pin Registered ECC memory. Verify your server board’s qualified vendor list for M386AAG40AM3-CWEZQ to ensure full compatibility with your CPU and BIOS.
Q: What is the recommended DIMM population order for optimal performance?
A: For this quad-rank x4 RDIMM, populate the farthest slot from the CPU per channel first, typically slot 1. Follow your server board’s manual for balanced memory interleaving across all populated channels to maximize bandwidth.
Q: Does this module support overclocking or XMP profiles?
A: No. This server-grade RDIMM adheres strictly to JEDEC DDR4-3200 specifications. It does not feature XMP profiles and does not support overclocking; it is designed for absolute stability in mission-critical enterprise deployments.
Q: What warranty and typical failure rate can I expect?
A: This module includes a 1-year warranty. As an enterprise-class ECC RDIMM, it delivers a very low annualized failure rate, backed by rigorous screening and high MTBF figures that meet the demands of 24/7 data center operation.