How much RAM does the Apple iMac (20 in, Early 2008) support?

The iMac (20 in, Early 2008) supports up to 4GB of memory across 2 slot(s), up to 2GB per slot.

What type of memory does the iMac (20 in, Early 2008) use?

It uses DDR2 SODIMM memory modules.

Compatible drive types: SATA 2.5" SSD.

Guaranteed-compatible SSD and hard-drive upgrades for the Apple iMac (20 in, Early 2008), matched to its drive bays and slots.

Guaranteed-compatible SSD and hard-drive upgrades for the Apple iMac (20 in, Early 2008) — matched to its drive bays and slots.

This option is out of stock.

The drive bay size is inferred from the system's reported storage interface.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

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Guaranteed-compatible SSD and hard-drive upgrades for the Apple iMac (20 in, Early 2008), matched to its drive bays and slots.

Guaranteed-compatible SSD and hard-drive upgrades for the Apple iMac (20 in, Early 2008) — matched to its drive bays and slots.

This option is out of stock.

The drive bay size is inferred from the system's reported storage interface.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.