iMac (Early 2006), iMac (Mid 2006), iMac (17-inch Late 2006 CD): Memory Specifications
The iMac (Early 2006) computer has two SDRAM slots in the bottom of the computer. The iMac ships from the factory with at least 512 MB of DDR2 SDRAM installed into the top slot. (The computer may come with more RAM in the top slot or RAM in the bottom slot, depending on how you ordered the computer from Apple.)
The iMac (Mid 2006) ships from the factory with at least 512 MB of DDR2 SDRAM, in two 256 MB DIMMs; one in each of the memory slots.
Note: If you upgrade the memory in your iMac (Mid 2006), make sure you have matching size SO-DIMMs in each slot for best graphics performance.
The iMac (17-inch Late 2006 CD) ships from the factory with at least 512 MB of DDR2 SDRAM, in two 256 MB DIMMs; one in each of the memory slots.
The maximum amount of RAM you can install in the iMac is 2 GB total (a 1 GB SO-DIMM in each of the two slots). You can use small-outline dual inline memory modules (SO-DIMMS) of 512 MB or 1 GB that meet all of these criteria:
- 667 MHz DDR2 SDRAM
DIMMs with any of the following features are not supported in this iMac:
- registers or buffers
- EDO RAM
Always follow the upgrade instructions for memory installation as written. Never attempt to remove screws that are not listed in the upgrade instructions.