M393AAG40M3B-CYF Samsung 1x128GB DDR4 RDIMM ECC RAM

High-Capacity DDR4 RDIMM ECC Server Memory for Dense 2-Socket Platforms with the M393AAG40M3B-CYF

The M393AAG40M3B-CYF is a Samsung enterprise DDR4 RDIMM designed to expand memory capacity in 2-socket rack servers where NUMA-aware workloads depend on large, stable DRAM footprints. With 128GB per module and ECC protection, the M393AAG40M3B-CYF supports higher VM density and larger in-memory datasets while maintaining predictable behavior under sustained utilization.

Built as a registered DIMM, the M393AAG40M3B-CYF helps platforms scale to higher total capacities without the signal integrity limitations common to unbuffered memory, enabling consistent performance at 2933MT/s. This aligns well with PCIe-based expansion strategies and NVMe storage architectures by reducing memory pressure during high I/O concurrency, database buffer growth, and analytics pipelines. The 288-pin low-profile form factor supports space-constrained chassis and airflow planning in dense server nodes.

Why Choose the M393AAG40M3B-CYF?

The M393AAG40M3B-CYF delivers a practical density-to-reliability profile for enterprise environments that must scale memory per socket without compromising service continuity. ECC with a 72-bit data path and registered buffering improves resilience for long-lived virtualization clusters and database tiers, while the quad-rank layout enables capacity scaling strategies that prioritize consolidation and controlled growth across standardized server configurations.

Samsung designs server DRAM for sustained data center duty cycles, emphasizing signal quality, thermal operating margins, and interoperability with mainstream server platforms. The M393AAG40M3B-CYF follows modern compliance expectations, supporting cleaner supply chains with RoHS, lead-free, and halogen-free requirements.

Key Applications:

• 2-socket server memory expansion and capacity scaling
• Virtualization and VDI consolidation
• In-memory databases and caching tiers
• Enterprise analytics and general compute

At Happyware - Server Hardware you benefit from Non-Binding Offers that match the M393AAG40M3B-CYF to your target server platform and capacity plan, and from Bulk Order Discount options for standardizing memory upgrades across larger fleets.