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RAM Upgrade question

226 Views 4 Replies Latest reply: Nov 5, 2012 9:09 PM by BDAqua RSS
romad Level 3 Level 3 (590 points)
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Nov 5, 2012 4:18 PM

I have a 21.5" mid-2011 iMac i5 that I plan on maxing out RAM-wise. Currently I have 4 GB installed: a 2 GB module in both Bank 0/ DIMM 0 and Bank 1/ DIMM 0

 

Now I've always been told that you should fill the RAM banks together, so shouldn't both slots of Bank 0 be filled first, instead of 1 slot of each Bank?

 

Next, I've ordered 2 8GB modules so where should I put them? My options seem to be:

 

1. Fill Bank 0/ DIMM 1 and Bank 1/ DIMM 1 with the 8 GB modules

 

2. Move the current 2 GB modules to the slots in 1 above and put the 8s in the freed-up slots

 

3. Fill both Bank 0 slots with the 2 GB modules and the Bank 1 slots with the 8 GB modules, or vice versa

 

This will give me a total of 20 GB but eventually I will replace the the 2GB modules with 8GB modules to have 32 GB max.

  • BDAqua Level 10 Level 10 (114,670 points)
    Currently Being Moderated
    Nov 5, 2012 4:45 PM (in response to romad)

    Just put the new pair in the now empty slots, they're paired sideway in one line on each bank.

  • den.thed Level 7 Level 7 (23,325 points)
    Currently Being Moderated
    Nov 5, 2012 5:03 PM (in response to romad)

    Refer to the manual that came with your iMac or > iMac: How to remove or install memory

     

    Additional notes i5 and i7 Quad Core iMac computers come with both top memory slots populated.

    .

    "Top" refers to the slots closest to the display; "bottom" refers to the slots closest to the stand).

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    .

    .

    .

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    8. Insert your new or replacement SO-DIMM into the empty slot, noting the orientation of the keyway of the SO-DIMM as shown below.

    iMac, Mac Mini, iPad, iPods, Mac OS X (10.6.8), (10.8.2), Safari, iTunes, iPhoto
  • BDAqua Level 10 Level 10 (114,670 points)
    Currently Being Moderated
    Nov 5, 2012 9:09 PM (in response to romad)

    I think it still does apply, just tha the Banks are arranged differently, a Bank is crosswise, not Parallel.

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