Detailed Specifications
Overview
The Samsung M391A4G43MB1-CTD is a 32GB DDR4 ECC unbuffered memory module designed for compatible workstations and systems that support ECC UDIMM memory. It operates at 2666MT/s with CL19 timings and uses a standard 288-pin DIMM form factor.
Key Features
- 32GB memory capacity
- DDR4-2666 data transfer rate
- ECC error detection and correction support
- Unbuffered, unregistered memory design
- 288-pin DIMM form factor
- Dual-rank 2Rx8 organization
- 1.2V operating voltage
- CL19 timings at DDR4-2666
Technical Specifications
| Brand | Samsung |
| Part Number / MPN | M391A4G43MB1-CTD |
| Product Type | DDR4 ECC Unbuffered Memory Module |
| Capacity | 32GB |
| Memory Technology | DDR4 SDRAM |
| Memory Speed | 2666MT/s |
| Memory Standard | DDR4-2666 / PC4-21300 |
| CAS Latency | CL19 |
| Voltage | 1.2V |
| Form Factor | 288-pin DIMM |
| ECC Support | Yes |
| Registered / Buffered | Unbuffered (UDIMM) |
| Rank Organization | Dual rank, 2Rx8 |
| Module Organization | 4G x 72 |
| Module Height | 31.25mm |
Applications
- Compatible workstations
- Systems requiring ECC unbuffered DDR4 memory
- Professional computing environments
- Memory upgrades for supported platforms
Compatibility and Installation
Check the motherboard and processor specifications to confirm support for 32GB DDR4 ECC unbuffered DIMMs. This module is not interchangeable with registered ECC RDIMM memory in systems that require registered modules. Supported memory speed depends on the host platform.
Frequently Asked Questions
What is the memory capacity?
The module provides 32GB of DDR4 memory.
Does it support ECC?
Yes, it supports ECC and is designed as an unbuffered DIMM.
What is its rated speed?
It is rated for DDR4-2666, or PC4-21300, at CL19.
Is this registered memory?
No. It is unbuffered ECC UDIMM memory.
Will it work in every DDR4 system?
No. The system must support ECC UDIMM memory and the module's capacity and configuration.
DC Supplies Product Note
Confirm the exact part number and system compatibility before ordering. ECC UDIMM and registered RDIMM memory types are not interchangeable across all platforms.
