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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Desktops > RAM slots in Intel iMac

RAM slots in Intel iMac
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harrisjamieh
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Join Date: Jun 2005
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May 23, 2006, 12:10 PM
 
I am planning to remove the 512 stick from my iMac, and replace it with a 256 stick that will come out of my new MacBook, giving the iMac a total of 1.25 GB and the MacBook a total of 1 GB (I am gunna buy 1 x 512 stick).

Anyway, in system profiler, under memory, there are 2 slots listed - DIMM0/BANK 0 and DIMM1/BANK 1. Does anyone know which is the top slot and which is the bottom slot? It would be easier to know so I did not accidently take out the 1 GB stick, and then put it all back together only to find I took the wrong stick out.

Also, on a side note, does the RAM in the iMac run at 667 Mhz? I thought it did, but SP is only showing it rnning at 533 Mhz.... maybe I got rippied off with the 1 GB stick I bought....
iMac Core Duo 1.83 Ghz | 1.25GB RAM | 160HD, MacBook Core Duo 1.83 Ghz | 13.3" | 60HD | 1.0GB RAM
     
Dakar
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May 23, 2006, 12:19 PM
 
667 mhz is right.
     
harrisjamieh  (op)
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May 23, 2006, 12:19 PM
 
Ah bugger seems like I got screwed over on that front then.... Oh well, it still works, and I doubt it is slowing the machine down that noticably
iMac Core Duo 1.83 Ghz | 1.25GB RAM | 160HD, MacBook Core Duo 1.83 Ghz | 13.3" | 60HD | 1.0GB RAM
     
badnewsblair
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May 23, 2006, 01:09 PM
 
512MB (single SODIMM) of PC2-5300 (667MHz) DDR2 memory; two SODIMM slots support up to 2GB

http://www.apple.com/imac/whatsinside.html

It runs at 667 MHz. It is considered PC5300. I think that is where people get confused.
[ 15 inch Macbook Pro 2.8 GHz Core 2 Duo ][ 20 inch Intel iMac 2 GB RAM / 256 MB ATI XT 1600 ][ iPhone OG (3GS on Reservation)][ White iPod 5th Gen. 60GB ]
     
harrisjamieh  (op)
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May 23, 2006, 01:20 PM
 
Nope, mine is deff running at 533 Mhz:

iMac Core Duo 1.83 Ghz | 1.25GB RAM | 160HD, MacBook Core Duo 1.83 Ghz | 13.3" | 60HD | 1.0GB RAM
     
andgarden
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May 24, 2006, 12:46 AM
 
Originally Posted by harrisjamieh
Nope, mine is deff running at 533 Mhz:

This is part of the mixed blessing of using a standard Intel chipset. There's a good chance that the self-rolled Apple logic in a Power PC designed would simply refuse to boot. Of course, you'd also have known right away that you'd bought the wrong RAM. . .
     
   
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