Samsung 32GB 3200MHz DDR4 PC4-25600 ECC Unbuffered CL22 288-Pin DIMM 1.2V Dual Rank x8 Memory Module — M391A4G43AB1-CWE

The Samsung M391A4G43AB1-CWE is a 32GB DDR4-3200MHz ECC Unbuffered (UDIMM) server memory module operating at 1.2V with CL22 latency. Featuring a 288-pin interface, Dual Rank x8 configuration, and PC4-25600 bandwidth, it delivers reliable ECC error correction for workstation and entry-level server platforms requiring unbuffered memory with data integrity protection.

Key Features

• 32GB capacity with ECC (Error-Correcting Code) for data integrity
• DDR4-3200MHz (PC4-25600) for high-bandwidth performance
• Unbuffered DIMM (UDIMM) for workstation and entry-level server compatibility
• Dual Rank x8 configuration for optimized memory interleaving
• 1.2V low-voltage operation for energy efficiency
• 288-pin interface — standard DDR4 DIMM form factor

Product Specifications

• Part Number: M391A4G43AB1-CWE
• Manufacturer: Samsung
• Model: 32GB DDR4-3200 ECC Unbuffered DIMM
• OEM Status: Genuine Samsung OEM
• Capacity: 32GB
• Type: DDR4 ECC Unbuffered DIMM (UDIMM)
• Speed: 3200MHz (PC4-25600)
• CAS Latency: CL22
• Voltage: 1.2V
• Rank / Organization: Dual Rank x8
• Pins: 288-Pin
• ECC: Yes

Memory Specifications

• Capacity: 32GB
• DIMM Type: Unbuffered ECC (UDIMM)
• DDR Generation: DDR4
• Pin Count: 288-Pin
• Rank: Dual Rank (2Rx8)
• Voltage: 1.2V
• ECC: Yes (Error-Correcting Code)

Performance Specifications

• Speed: DDR4-3200MHz
• Bandwidth: PC4-25600
• CAS Latency: CL22
• Timings: 22-22-22
• XMP / JEDEC: JEDEC standard

Use Cases

• Workstation memory upgrade requiring ECC data protection
• Entry-level server platforms supporting DDR4 ECC UDIMM
• Scientific and engineering workstations with ECC requirements
• High-reliability computing environments needing error correction

Compatibility

• Compatible with motherboards supporting DDR4 ECC Unbuffered (UDIMM) memory
• Not compatible with systems requiring RDIMM or LRDIMM
• Verify motherboard ECC UDIMM support before ordering
• Compatible with Intel Xeon E and AMD Ryzen Pro platforms supporting ECC UDIMM

Frequently Asked Questions

What is the difference between ECC Unbuffered (UDIMM) and ECC Registered (RDIMM)?

ECC UDIMM connects directly to the memory controller without a register buffer, making it suitable for workstations and entry-level servers. ECC RDIMM includes a register buffer for improved stability in multi-DIMM configurations, used in enterprise servers.

Is the M391A4G43AB1-CWE compatible with consumer desktop motherboards?

ECC UDIMMs require motherboard and CPU support for ECC memory. Most consumer platforms do not support ECC — verify your specific motherboard and CPU ECC compatibility before ordering.

What does Dual Rank x8 mean?

Dual Rank x8 means the module has two ranks of memory chips, each using x8-wide chips. This configuration allows the memory controller to interleave between ranks for improved bandwidth.

The Samsung M391A4G43AB1-CWE 32GB DDR4-3200 ECC Unbuffered DIMM delivers reliable, error-correcting memory performance for workstations and entry-level servers. Order today for genuine Samsung memory quality with ECC data integrity protection.