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iMac Intel 27" EMC 2309 and 2374 RAM Replacement

What you need

  1. iMac Intel 27" EMC 2309 and 2374 RAM Replacement, Access Door: step 1, image 1 of 2 iMac Intel 27" EMC 2309 and 2374 RAM Replacement, Access Door: step 1, image 2 of 2
    • 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.

    • 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.

  2. iMac Intel 27" EMC 2309 and 2374 RAM Replacement, RAM: step 2, image 1 of 1
    • Use your fingers or the tip of a spudger to slide the black plastic RAM tray pull tab out of the RAM slot.

  3. iMac Intel 27" EMC 2309 and 2374 RAM Replacement: step 3, image 1 of 2 iMac Intel 27" EMC 2309 and 2374 RAM Replacement: step 3, image 2 of 2
    • 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.

    • Use your fingers to slide the RAM chip out of its socket.

    • If necessary, repeat this process for the other RAM module(s).

Conclusion

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

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8 Comments

Interestingly, the mid 2011 iMac 27 inch also goes to 12GB!

I originally thought I'd be upgrading to 8GB today but found 4 slots instead of 2 :-)

As long as the two front (close to the screen) slots are paired with the exact same RAM config.

For example:

Two front slots Apple 2GB chips = 4GB.

Two rear slots, Crucial Lexar 4GB chips = 8GB

Total 12GB

Hoorah no waste and more RAM, come on Lion... I'm Ready!

spaceshipdev - Reply

Need a#0 screwdriver, not #1

vince Greco - Reply

Be sure to really push the RAM all the way into the socket. I had a "no RAM" error beep when I first booted up my iMac after doing this. Just an extra two millimetres was all it needed to be properly installed. It can be quite tough to get in.

Magda Stremeski - Reply

Hi,

I've got a 2309 and just received my two additional 4GB RAM Cards. Put them in and I can say that the speed improved (now with 16GB). Not dramatically, however, some applications did always show the little rainbow disc when my Mac was "thinking". This is now gone.

I am on OS X 10.9.5 still and the whole Mac feels as if it can "breathe" more lightly with the additional RAM.

Thanks!

peterschiemann - Reply

My 11,1 27” 2.66Ghz iMac happy eats up all the 4x8GB I put in there.

Brad Anderson - Reply

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