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Single green 260-pin SODIMM module with black chips, no heat spreader

A-Tech

A-Tech 32GB DDR4 2666MHz SODIMM 260-Pin Memory Upgrade for iMac 2019/2020 Mac mini 2018/2020

SKU CH-J36Z-8M8WB

32 GB DDR4 2666 MHz SO-DIMM module upgrades 2019 and 2020 iMac and 2018 and 2020 Mac mini models

  • Total capacity32 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 32 GB single module doubles capacity for heavy multitasking
  • DDR4 2666 MHz speed matches factory spec for stable operation
  • 260-pin SO-DIMM form factor fits iMac 2019/2020 and Mac mini 2018/2020
  • Non-ECC unbuffered design ensures broad macOS compatibility
  • Major-brand chips tested to strict quality standards

Apple Mac Compatible Memory Upgrade

This 32GB DDR4 2666MHz SODIMM module is built for select Apple iMac and Mac mini models released in 2019 and 2020. It uses a 260-pin form factor and operates at 1.20V without ECC or buffering. The single stick design adds capacity in one slot.

Suits 27-inch iMac and Mac mini owners

Buyers with a compatible 27-inch iMac (2019, 2020) or Mac mini (Late 2018, Early 2020) can install this module directly. Systems using a different memory generation, a different pin count, or requiring ECC registered memory cannot use this kit.

32GB Single Module Capacity

The kit provides 32GB in one 2Rx8 rank module running at PC4-21300 speed. This density determines whether the Mac can accept the upgrade and how much total memory the system will reach.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $152.99
Cheaper than about 61% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $4.78 per GB
Cheaper than about 80% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR4 Apple Mac RAM Memory Upgrades
Total capacity32 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsApple Mac Systems

Questions about this item

Will the 2Rx8 rank configuration need any firmware update to stay stable in an iMac 2019?

The module is built to Apple Mac Certified specifications and runs at the standard 1.20V, so no firmware change is required for the listed iMac 2019 or 2020 models.

What thermal limit appears first when the 32 GB SODIMM runs at 2666 MHz all day?

Without a heat spreader the chips rely on the system's internal airflow; the Mac's own thermal management will throttle memory speed before the module reaches its maximum junction temperature.

How much power does the 1.20V 32 GB module draw during continuous workloads?

At the rated 1.20V the module stays within standard DDR4 SODIMM power envelopes, so the Mac's existing power delivery handles sustained use without extra cooling.

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