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Green rectangular circuit board with gold edge connectors and black memory chips

Micron Technology, Inc.

Micron Technology, Inc. MTA18ASF2G72PZ-2G6E1 16GB DDR4 2666 Registered server RAM

SKU CH-6HGY-7JYFY MPN MTA18ASF2G72PZ-2G6E1

Registered DDR4 server module delivering 16 GB at 2666 MT/s with 1Rx4 organisation

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • Buffer typeRegistered
  • Memory rank1Rx4
  • Product type288-Pin DDR4 SDRAM
  • Key features16 GB SR X4 DDR4 RDIMM 2666 MEM
  • 16 GB capacity supports larger workloads
  • DDR4 2666 speed delivers 21300 MT/s data rate
  • Registered design reduces electrical load on the memory controller
  • Single-rank x4 organisation optimises signal integrity
  • 288-pin RDIMM form factor fits standard server slots

Target fit

This 16 GB DDR4 RDIMM is built for servers and workstations that require registered memory with error correction. The 1Rx4 organisation and 288-pin form factor suit multi-socket platforms where signal integrity across many modules matters more than low latency alone.

Upgrade path

It replaces unbuffered DDR4 DIMMs or slower registered sticks when the platform demands registered signalling and the memory controller supports DDR4 2666. The jump is worth it when the motherboard manual specifies RDIMM population rules that unbuffered modules cannot satisfy.

Sustained behaviour

Registered buffering reduces electrical load on the memory bus, allowing stable operation across full channel populations during long compute runs. The 2666 MT/s rate delivers consistent throughput without the voltage scaling or timing relaxations that higher-speed bins often require under continuous load.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $81.99
Cheaper than about 75% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $5.12 per GB
Cheaper than about 72% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameMicron
Model nameMTA18ASF2G72PZ-2G6E1
Total capacity16 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
Buffer typeRegistered
Memory rank1Rx4
Size & build
Shipping weight0.09 kg
Package size178 × 76 × 8 mm

Questions about this item

Does this 288-pin DDR4 RDIMM fit a standard server DIMM slot?

The module uses the 288-pin DDR4 RDIMM form factor, which matches the standard registered DIMM slots found in compatible servers and workstations.

What is the correct seating procedure for the registered 1Rx4 module, and what step is often missed?

Align the notch with the slot key, press firmly until both retention clips click, then verify the register LED sequence during POST to confirm the buffer is active.

When should the 16 GB DDR4 2666 registered DIMM be replaced in a production server?

Replace the module if ECC correctable-error counters rise steadily, if memory diagnostics report uncorrectable faults, or during a planned capacity upgrade.

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