Micron 16GB 2666MHz DDR4 PC4-21300 ECC Unbuffered CL19 288-Pin DIMM 1.2V Dual Rank x8 Memory Module – MTA18ASF2G72AZ-2G6D1

Micron 16GB DDR4-2666 ECC UDIMM 2Rx8 — MTA18ASF2G72AZ-2G6D1

The Micron MTA18ASF2G72AZ-2G6D1 is a 16GB DDR4-2666 ECC Unbuffered DIMM (UDIMM) operating at 2666MHz (PC4-21300) with CL19 latency at 1.2V in Dual Rank x8 configuration. The D1 suffix identifies a specific production revision for server QVL qualification and traceability on Intel Xeon E and AMD EPYC ECC UDIMM platforms.

Key Features

• D1 production revision — specific QVL qualification variant
• ECC Unbuffered — error correction without register buffer
• Dual Rank x8 (2Rx8)
• Genuine Micron server memory

Product Specifications

• Part Number: MTA18ASF2G72AZ-2G6D1
• Manufacturer: Micron
• Base Part: MTA18ASF2G72AZ-2G6
• Capacity: 16GB
• Type: DDR4 ECC UDIMM
• Speed: 2666MHz (PC4-21300)
• CAS Latency: CL19
• Voltage: 1.2V
• Ranks x Width: 2Rx8
• Pins: 288-pin

Memory Specifications

• Bandwidth: PC4-21300 (21.3 GB/s theoretical)
• ECC: Single-bit error correction, multi-bit error detection
• Buffer Type: Unbuffered — no register between controller and DRAM

Use Cases

• Workstations and entry-level servers requiring D1 revision QVL qualification
• Intel Xeon E and AMD EPYC ECC UDIMM deployments
• NAS and storage servers supporting ECC unbuffered DDR4-2666

Compatibility

• Intel Xeon E ECC UDIMM platforms
• AMD EPYC and Ryzen Pro platforms supporting ECC UDIMM
• Not compatible with RDIMM-only enterprise server platforms
• Verify server QVL for D1 revision qualification

Frequently Asked Questions

What does the D1 suffix mean?

D1 is a production revision identifier for the MTA18ASF2G72AZ-2G6 base part. Electrical specifications are identical to other revisions — the suffix tracks manufacturing revision for QVL qualification.

What is the difference between MTA18ASF2G72AZ-2G6D1 and MTA18ASF2G72AZ-2G6D?

MTA18ASF2G72AZ-2G6D is a 2Rx4 (x4 die) variant while MTA18ASF2G72AZ-2G6D1 is a 2Rx8 (x8 die) revision. Despite similar suffixes these are different rank/width configurations — always verify the full part number.

What is the difference between MTA18ASF2G72AZ-2G6D1 and MTA18ASF2G72AZ-2G6E2R?

Both are 16GB DDR4-2666 ECC UDIMM 2Rx8 with identical electrical specifications. D1 and E2R are different production revisions — check your server QVL for the qualified revision.

The Micron MTA18ASF2G72AZ-2G6D1 delivers 16GB DDR4-2666 ECC UDIMM in 2Rx8 configuration — the D1 production revision for server QVL-specific deployments on Intel Xeon E and AMD EPYC platforms.