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How to remove the original RAM?

I want to upgrade my memory into 2.5G,but problem seems they are not compatible. while added the additional 2G memory the Mac shattered down very ofthen .Besides the memory mode I bought is the required one,thus I accept the solution to remove the original 512M ,unfortinately it's soldered with the mother board.How to do it then?any tools necessary?

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make sure the RAM you are using meets the specs listed in this Apple Knowledge Base article:

http://support.apple.com/kb/HT2266

PowerPC G5 processors are very finicky about RAM, make sure you are using quality RAM with a lifetime warranty - don't buy the cheapest module out there. Sounds like your machine just doesn't like the 2GB module... hopefully you can return it? If so try a different brand: OWC, Crucial, EDGE, Kingston all offer RAM which works well with G5 processors.

You cannot remove the internal 512MB module - it is surface mount soldered onto the logic board.

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Thanks David,

I ordered the exact same standard as it required.Here's what the seller described,

http://cgi.ebay.com/NEW-2GB-Apple-iMac-G...

It's a Kingston for iMac533 model.

Will it depend on the operation system?Mine's still in Tiger

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no the version of OS X won't have any impact on whether the memory you bought works or not. To me, from the vendor's page, it's not 100% clear what the actual specs of the RAM are - you're basically trusting the vendor is selling you the right kind. Personally I would buy from a vendor that lists the actual technical specs and make sure they match the specs that David pointed to above

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Oh,I got the lifetime warranty paper together with the product and the model sign tagged on the covery is KTA-iMac533/2G which said quite compatible to iMac G5... so confused , thanks anyway.

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talentsky724 will be eternally grateful.
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