Installing iMac Intel 27" EMC 2309 and 2374 RAM iMac Intel 27" EMC 2309 and 2374 and 2390 RAM replacement. http://d3nevzfk7ii3be.cloudfront.net/igi/NmuOGaXLTLvKhVlL Andrew Bookholt Easy iMac Intel 27" EMC 2309 and 2374

Upgrade RAM modules for an instant boost in speed.

Upgrade RAM modules for an instant boost in speed.

Relevant parts
Tools
 Phillips #1 Screwdriver Spudger PC3-8500 1 GB RAM Chip PC3-8500 2 GB RAM Chip PC3-8500 4 GB RAM Chip This guide has been found to be exceptionally cool by the iFixit staff. Installing iMac Intel 27" EMC 2309 and 2374 Access Door Loosen the three Phillips screws securing the access door to the bottom edge of your iMac. Loosen the three Phillips screws securing the access door to the bottom edge of your iMac. These screws will remain captive in the access door. These screws will remain captive in the access door. Remove the access door from your iMac. Remove the access door from your iMac. During reassembly, fasten the access door loosely and align it with the pocket cut into the outer case of the iMac before fully tightening the screws. During reassembly, fasten the access door loosely and align it with the pocket cut into the outer case of the iMac before fully tightening the screws. http://d3nevzfk7ii3be.cloudfront.net/igi/uNKhXoCAwZO2RHmR http://d3nevzfk7ii3be.cloudfront.net/igi/aZSFSpF6EqB15Ire Use your fingers or the tip of a spudger to slide the black plastic RAM tray pull tab out of the RAM slot. Use your fingers or the tip of a spudger to slide the black plastic RAM tray pull tab out of the RAM slot. http://d3nevzfk7ii3be.cloudfront.net/igi/NmuOGaXLTLvKhVlL Pull the black plastic tab away from the iMac to eject the RAM chip from its socket. Pull the black plastic tab away from the iMac to eject the RAM chip from its socket. The RAM modules are firmly seated and may require a fair amount of force to remove. The RAM modules are firmly seated and may require a fair amount of force to remove. Use your fingers to slide the RAM chip out of its socket. Use your fingers to slide the RAM chip out of its socket. If necessary, repeat this process for the other RAM module(s). If necessary, repeat this process for the other RAM module(s). http://d3nevzfk7ii3be.cloudfront.net/igi/og4XBxB2FsSmOJBD http://d3nevzfk7ii3be.cloudfront.net/igi/gZVIIrJfpMFFxXcV

To reassemble your device, follow these instructions in reverse order.