How much RAM does the Apple iMac (21.5-inch, late 2012) support?

The iMac (21.5-inch, late 2012) supports up to 16GB of memory across 2 slot(s), up to 8GB per slot.

What type of memory does the iMac (21.5-inch, late 2012) use?

It uses DDR3 SODIMM memory modules.

Guaranteed-compatible DDR3 SODIMM upgrades for the Apple iMac (21.5-inch, late 2012), in matched-kit options that fill your slots.

This option is out of stock.

Specifications reported for this system.

Good to know

Maximum capacity per slot is inferred from total capacity ÷ number of slots.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

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Guaranteed-compatible DDR3 SODIMM upgrades for the Apple iMac (21.5-inch, late 2012), in matched-kit options that fill your slots.

This option is out of stock.

Specifications reported for this system.

Good to know

Maximum capacity per slot is inferred from total capacity ÷ number of slots.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.