SAMSUNG M393A4K40DB3 32GB DDR4 RDIMM Server Memory (RAM), 3200 Mbps Memory Speed, 2R x 4 Rank, ECC, 1.2 Voltage, 288 Pins | M393A4K40DB3-CWE

Samsung 32 GB DDR4‑3200 MHz ECC RDIMM – Ultimate Server Performance

The Samsung M393A4K40DB3‑CWE is a high-performance, ECC-registered memory module engineered for servers, data centers, and mission-critical applications. This 32 GB DDR4 RDIMM operates at blazing-fast 3200 MT/s (PC4-25600) speeds with low power consumption at just 1.2 V. Dual-rank (2R×4) configuration provides excellent data integrity and stability, while ECC (Error‑Correcting Code) ensures continuous uptime by detecting and correcting memory errors on the fly.

Designed for 288-pin DIMM motherboards supporting registered ECC memory, this module integrates logic-level buffering (“registered”) to optimize signal integrity across multi-slot server environments. Ideal for virtualization, database servers, and enterprise workloads, the M393A4K40DB3 delivers robust performance and compatibility backed by Samsung engineering.

 Specification 

Feature	Specification
Capacity	32 GB
Memory Type	DDR4 SDRAM
DIMM Type	Registered (RDIMM)
Error Correction	ECC (Error‑Correcting Code)
Speed	3200 MT/s (PC4‑25600)
Voltage	1.2 V
Rank × Organization	2R × 4
CAS Latency	CL22 (tRCD/tRP/tRAS typical)
Pins	288-pin
Component Composition	(2 Gbit × 4) × 36
Application	Server, Data Center, AI, 5G
Form Factor	1 DIMM module, 133 mm × 30 mm
Industry Status	Discontinued / EOL