iMac is seeing 512 mb ram when i have 768??

in Genius Bar edited January 2014
any thoughts...i have 256 internal and 512 in so-dimm slot....iMac 800 lcd....system profile reads 256 and 256??? would taking ram out and then reinstalling bring it back to normal??? any thoughts or suggestions would be appreciated....g


  • Reply 1 of 5
    thegeldingthegelding Posts: 3,230member
    any thoughts??? (don't you just hate people who bump their own threads? <img src="graemlins/embarrassed.gif" border="0" alt="[Embarrassed]" /> )....

    guess i will take it apart tonight...g
  • Reply 2 of 5
    Are you sure it is actually a 512Mb chip, and you weren't actuaally ripped off? Try the chip in another machine to see if it still comes up with 256Mb as well.

    It is either actually a 256mb chip, or it is possible that is damaged. If it works in another machine though, it could be the way it is inserted in your machine. Give it a shot, and see what happens...
  • Reply 3 of 5
    thegeldingthegelding Posts: 3,230member
    my iMac saw it as 512 pc133 ram for 6 sees as 256 pc100 ram (and internal apple ram is seen as 256 pc100 ram too??? both are 133 ram)...oh well, will run hardware test disc and then take out ram and then...who knows what next...guess it gives me a project for the weekend...g
  • Reply 4 of 5
    alcimedesalcimedes Posts: 5,486member
    had this happen to me once before. the ram was poor quality, so the machine saw it at approx. half the size, and lower speed. my guess is you got PC100 ram, or the chip finally couldn't take running at 133, died partially and is limping along at PC100 now.

  • Reply 5 of 5
    thegeldingthegelding Posts: 3,230member
    so i should replace it??? time to call crucial....g
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