Buying RAM for an iMac

I have a slot-loading indigo iMac, 500 mhz, 20 Gb. I want to buy some RAM for it but am confused by the different types available. What should I be looking for?
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If this is the specs of your Mac :

then your iMac should be able to use PC100 SDRAM that is normally used by Intel PC.
You'll be able to get it from most of the mail order company.

If you can't find PC100, you might be able to use PC133.  (make sure you ask for their return policy incase it wont work).  Get a branded one (such as Kingston, Cosair, Micron, etc) especially if you're running OSX.

Good luck

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I would recommend using “” ( for your situation.  I have had nothing but success when following their 3 step process.  Also, the prices are very good.  Good luck!
clareturpinAuthor Commented:
Oh, too late to give you points. What a pity - that Crucial site is great! I just bought some RAM on it.

Will make up for it on the other question you answered. Thanks for your help!
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