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  1. #1


    Member Since
    Nov 19, 2011
    Posts
    16
    Specs:
    iMac 21.5-inch 2011. 2.5 GHz Intel Quad core i5, 12GB RAM, Lion 10.7.2
    is it possible that more RAM has slowed down my iMac
    Hey there guys, im new to the Forum so im sorry if i have put this thread in the wrong section. i own a 2011 21.5-inch iMac (2.5GHz Quad-Core Intel Core i5
    1920 x 1080 resolution
    4GB (two 2GB) memory
    500GB hard drive1
    AMD Radeon HD 6750M with 512MB) while browsing Amazon i came across some 'Crucial' memory upgrades, i ordered 8gb (2x4gb) which arrived quickly and i installed with out a proplem. how ever. now my imac feels slower and less responsive, i have no actually way of testing speed (that i know of) just wondering if this is actually possible, can more ram make your mac slower??

  2. #2

    mrplow's Avatar
    Member Since
    Oct 01, 2007
    Location
    UK
    Posts
    6,907
    Specs:
    27" iMac i7 (2011) 10.11, Mac Mini i5 (2014), iPhone6s, Apple Watch, iPad Pro 9.7, AppleTV (4)
    Was it definately DDR3 PC3-10600, DDR3 (non-ECC) ?
    Not been around these parts for a while. Trying to change that . .

    Please use the reputation system if you think you've been helped - bottom left of this post

  3. #3

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    49,085
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    If he purchased it from Crucial it was probably the correct modules provided he used the Crucial memory updater.

    To the OP:

    The two new 4 GB modules.... which slot did you put them in, upper or lower bank? The larger modules should go in the upper bank which means removing the two smaller modules and moving them to the lower bank.

  4. #4


    Member Since
    Nov 19, 2011
    Posts
    16
    Specs:
    iMac 21.5-inch 2011. 2.5 GHz Intel Quad core i5, 12GB RAM, Lion 10.7.2
    Thanks for your replies. I didn't remove the smaller modules from the upper bank, I just placed them in the lower. I didn't realise that would actually make a difference? I shall do that right now and let you know if it has any affect.

  5. #5

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    49,085
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    Give that a try but be careful removing the smaller modules. The slots in the banks on an iMac are very tight. Let us know if it makes a difference. Also allow the machine to reboot several times to build up the caches.

  6. #6


    Member Since
    Nov 19, 2011
    Posts
    16
    Specs:
    iMac 21.5-inch 2011. 2.5 GHz Intel Quad core i5, 12GB RAM, Lion 10.7.2
    lol ok. well I cant actually get them back out I dont wanna try using pliers. but I think thats the only way i'm going to get them out, they really are tight hahaha

  7. #7


    Member Since
    Nov 19, 2011
    Posts
    16
    Specs:
    iMac 21.5-inch 2011. 2.5 GHz Intel Quad core i5, 12GB RAM, Lion 10.7.2
    Right. managed to remove them with a small pair of modelling pliers. Swapped them over (after scratching one of the 2gb's chip. it seems to be working fine.... thankfully) and it does actually appear to be running better. not sure if its a placebo or not but lets hope that has 'fixed' it. Also i hope that my slightly damaged ram chip doesn't break in a few days (guess i should count myself lucky it wasnt one of the 4gb chips thanks again

  8. #8

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    49,085
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    OK, great. Glad to hear you got them out with breaking anything. By the way, there used to be a small tool available for removing memory modules. I haven't seen one around for awhile and I guess it's because the size and shape of the various modules have changed over the years.

    What is useful to remove modules (and this might sound odd) is a small set of rubber tipped forceps that lock. You actually need two of them. Lock on to the left and right side of the module and gently rock them up and down like a see-saw and that gets them out without damage.

  9. #9


    Member Since
    Apr 20, 2010
    Posts
    472
    Specs:
    21.5 iMac 3.06 ghz 12gb ram 500g HD iPad 2 16G
    There is a small black plastic "tab" that is just underneath the memory sticks...you need to pull on that tab to properly remove the memory from an iMac...fwiw...

  10. #10


    Member Since
    Nov 19, 2011
    Posts
    16
    Specs:
    iMac 21.5-inch 2011. 2.5 GHz Intel Quad core i5, 12GB RAM, Lion 10.7.2
    I did think that codda. cos its the same tab system to remove the battery on the iphone 4. however i was a little reluctant to tug really hard to see if it did remove it because when i tried that with my iPhone 4 i snapped the tab

  11. #11

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    49,085
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    Quote Originally Posted by codda View Post
    There is a small black plastic "tab" that is just underneath the memory sticks...you need to pull on that tab to properly remove the memory from an iMac...fwiw...
    On the newer iMacs the slots are so tight (don't know why) the tab doesn't work like it should. And there is a chance it will snap. The module tabs work fine on the new MB and MBP though.

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