Micron 16GB 2666MHz DDR4 PC4-21300 ECC Unbuffered CL19 288-Pin DIMM 1.2V Dual Rank x8 Memory Module – MTA18ASF2G72AZ-2G6

Micron 16GB DDR4-2666 ECC UDIMM 2Rx8 — MTA18ASF2G72AZ-2G6

The Micron MTA18ASF2G72AZ-2G6 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. Designed for workstations and entry-level servers supporting ECC UDIMM on Intel Xeon E and AMD EPYC platforms.

Key Features

• ECC Unbuffered — error correction without register buffer overhead
• Dual Rank x8 (2Rx8) — higher density per slot vs single rank
• Genuine Micron server memory
• Standard commercial temperature range

Product Specifications

• Part Number: MTA18ASF2G72AZ-2G6
• Manufacturer: Micron
• 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 on Intel Xeon E or AMD EPYC/Ryzen Pro platforms supporting ECC UDIMM
• Entry-level servers and NAS requiring ECC unbuffered DDR4-2666
• Cost-effective ECC memory for platforms not requiring registered DIMMs

Compatibility

• Intel Xeon E (LGA1200/LGA1700) ECC UDIMM platforms
• AMD EPYC and Ryzen Pro platforms supporting ECC UDIMM
• Not compatible with RDIMM-only enterprise server platforms
• Verify platform ECC UDIMM support before installation

Frequently Asked Questions

What is the difference between ECC UDIMM and ECC RDIMM?

ECC UDIMM has no register buffer and suits workstations and entry-level servers. ECC RDIMM includes a register buffer for improved signal integrity and is required by most enterprise server platforms.

What is the difference between MTA18ASF2G72AZ-2G6 and MTA18ASF2G72AZ-2G6E2R?

Both are 16GB DDR4-2666 ECC UDIMM 2Rx8. The E2R suffix denotes a production revision with identical electrical specifications — some server QVLs may qualify specific revisions.

What does 2Rx8 mean?

Dual Rank x8 — two ranks of x8 (8-bit wide) DRAM devices providing higher density per slot compared to single rank configurations.

The Micron MTA18ASF2G72AZ-2G6 delivers 16GB DDR4-2666 ECC UDIMM in 2Rx8 configuration for workstations and entry-level servers requiring ECC unbuffered memory on Intel Xeon E and AMD EPYC platforms.