How To: 5 Steps to install or replace RAM in newer iMacs
If you are looking to upgrade your existing RAM or replace RAM that may have gone bad, this article will give you step-by-step instructions to successfully complete your task.
Be sure you have the right RAM.
RAM is as varied as a package of Skittles, so it's important to be sure your new module(s) will work in your machine. The early 2008 edition of the iMac, for example, takes an unbuffered, PC2-6400, nonparity, 200-pin, 800 MHz, DDR2 SDRAM that comes in 1GB or 2GB sizes. Thankfully, most retailers that supply RAM will label it by model number (MBxxx/A) or by name (iMac Early 2008). Once you have the correct RAM, you are ready to install it.
Prep your area.
Be sure the area where you are working is free of clutter and dust (the more static-free the environment, the better). Also, be aware of any containers filled with liquid that may be nearby and have the potential to spill if bumped; the last thing you want is brand new RAM soaked in coffee. To prevent scratches on your display, place a soft, clean towel or cloth on the desk or table you will be working on. Disconnect all cables (including the power cable) from your iMac and lay it face down on the cloth.
Installing the RAM.
1. Using a Phillips screwdriver, remove the RAM access door at the bottom of your iMac.Resources
2. Untuck the tab in the memory compartment and pull to eject the installed RAM. (Note: if you are only adding RAM, you do not need to eject the currently installed RAM.)
3. Insert your new RAM module into the empty slot(s). Be sure the keyway of the RAM module matches that of the empty slot. Press the module into the slot until you hear a click sound. (Note: This process takes quite a bit of torque, but as long as the keyways are matched, the RAM module should snap into place without a problem.)
4. Tuck the pull tabs back and replace the RAM access door.
5. Stand your iMac up, reconnect your cables, and start playing World of Warcraft.
MacFixIt forum thread describing issues with the eject tabs on the newer iMacs.
Apple KB Article describing RAM installation in newer iMacs.
Experiencing problems? Have feedback? Let us know!
Resources