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Imac. placed 2 2gb ram cards as directed. wouldn't start up. i removed these and replaced the 1 g card back in and it works fine. the apple rep at best buy told me these were the right cards. and suggestions? thanks, jim

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  • James Fox Sep 16, 2010

    hi, 24 inch imac mid 2007, processor 2.4 ghz intel core 2 duo
    memory installed with machine 1 gb 667mz, ddr2 sdram. bank 0/ dimmo(status ok) bank 1/ dimm1-empty. new parts PNY 2 gb ddr2(pc2-5300 compatilble with 667 mhz. the apple rep said this was correct. machine wouldn't turn on after installation. when i went back to the original card it went on. thanks, jim any other info you need?

  • James Fox Sep 16, 2010

    thanks for all your help. there is one card( original equipment) with one slot empty. do i leave the original1 gb card in and add the 2 gb card to the empty slot for a total of 3 gb. the new card is PNY 2gb pc2-5300 667mhz ddr2 SDRAM sodimm 200-pin memory module (MN2048SD2-667)?

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I need tech specs.
1. Your equipment make and model. 2. Ealier RAM make and model. 3. Recent purchase make and model.
Kindly do understand as an expert I can't solve your problem unless I know the problem.

Posted on Sep 16, 2010

  • 1 more comment 
  • Aruna Singh
    Aruna Singh Sep 16, 2010

    It comes standard with 1GB of 667MHz DDR2 SDRAM, although that RAM is split between two 512MB DIMMs. This means any subsequent upgrades will require tossing at least one of the DIMMs to make room, making upgrades more expensive. Also, the Intel chipset that Apple uses in the iMac means the operating system can address only 3GB of RAM, even if you were to put two 2GB DIMMs inside. This is the original from the tech specifics. Now kindly let me know the case with your equipment. Did you have two 512 RAMs and did you tried to replace both. As you can go through the company's specs. Your equipment cannot support more than 3 gb. Hence, If you were using two ram's earlier I'd suggest you use one of it and one of the new one, only if they are SD RAM. So at the outcome the only mistake was by the company itself. They provided you wrong information (your equipment can't handle more than 3gb of RAM). Kindly let me know if you need any further assistance. Thank you for using fixya and for your patience.

  • Aruna Singh
    Aruna Singh Sep 17, 2010

    Yes you will now have to use one 1 gb SDRAM and one 2gb SDRAM cards. As your equipment cannot support more than that.

  • James Fox Sep 17, 2010

    thank you it works so much better, you were a great and patient help, i thank you, jim

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