Samsung 32GB DDR4 3200MHz ECC Registered Server Memory — M393A4K40EB3-CWECO

The Samsung M393A4K40EB3-CWECO is a 32GB DDR4 ECC Registered (RDIMM) server memory module operating at 3200MHz (PC4-25600) with CAS latency CL22 and 1.2V operating voltage. This Dual Rank x4 module delivers maximum DDR4 bandwidth at the highest DDR4 RDIMM speed for enterprise server workloads including virtualization, databases, and general-purpose computing. Error-Correcting Code (ECC) technology continuously detects and corrects single-bit memory errors in real time, ensuring data integrity in mission-critical environments. The registered (buffered) design reduces electrical load on the memory controller, enabling stable multi-DIMM configurations across enterprise server platforms.

Key Features

• 3200MHz — Highest DDR4 RDIMM Speed: PC4-25600 delivers maximum DDR4 memory bandwidth for bandwidth-sensitive enterprise workloads
• ECC Error Protection: Real-time single-bit error correction ensures data integrity for mission-critical server workloads
• Registered (Buffered) Design: Enables stable multi-DIMM server configurations without signal degradation
• Samsung DRAM: Industry-leading manufacturing quality with proven enterprise-grade reliability and longevity
• RoHS Compliant: Meets global environmental and safety standards for enterprise deployments

Technical Specifications

• Part Number: M393A4K40EB3-CWECO
• Manufacturer: Samsung
• Memory Type: DDR4 SDRAM
• Module Type: RDIMM (Registered / Buffered)
• Capacity: 32GB
• Speed: 3200MHz (PC4-25600)
• CAS Latency: CL22
• Timing: 22-22-22
• Voltage: 1.2V
• Form Factor: 288-Pin DIMM
• Rank: Dual Rank (2Rx4)
• Die Organization: x4
• Data Width: 72-bit (64-bit + 8-bit ECC)
• Error Correction: SECDED (Single-bit correction, Double-bit detection)
• Operating Temperature: 0°C to 85°C

Use Cases

• Virtualization: VMware vSphere, Microsoft Hyper-V, and KVM deployments on DDR4 server platforms at peak bandwidth
• Database Servers: MySQL, PostgreSQL, Microsoft SQL Server, and Oracle database workloads requiring peak DDR4 bandwidth
• General-Purpose Computing: Enterprise application servers and web servers requiring maximum DDR4 speed
• High-Density Server Deployments: 32GB DDR4 RDIMM at peak 3200MHz speed for new server deployments

Compatibility

• Compatible with DDR4 RDIMM slots supporting 3200MHz — verify your platform's maximum supported DDR4 speed before ordering
• CWECO suffix denotes specific OEM or regional server vendor qualification — verify against your server's memory QVL before ordering
• Do not mix with DDR4 UDIMMs or LRDIMMs in the same system
• For multi-DIMM stability, populate channels with matched capacity, speed, and rank modules

Frequently Asked Questions

Is this module compatible with DDR5 servers?

No — DDR4 and DDR5 are not interchangeable. DDR4 RDIMMs require DDR4-compatible server platforms. Always verify your server's memory type requirement before ordering.

What does the CWECO qualification suffix indicate?

Samsung uses qualification suffixes to denote OEM validation, regional certification, or specific server vendor testing. CWECO identifies this module's exact qualification tier — always cross-reference with your server vendor's memory compatibility or QVL list before purchase.

Can this module run at 2933MHz or 2666MHz if my server does not support 3200MHz?

DDR4 modules are backward speed-compatible — if your server platform does not support 3200MHz, the module will train down to the platform's maximum supported speed. Always verify with your server vendor's QVL to confirm supported configurations.

Whether you are deploying DDR4 server infrastructure at peak bandwidth, expanding virtualization capacity, or scaling database server platforms, the Samsung M393A4K40EB3-CWECO delivers the 32GB DDR4 3200MHz RDIMM performance, ECC protection, and Samsung manufacturing quality your enterprise server environment demands.