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It seems so, but the 9 USD RAM has 133MHz as bus speed, while the iMac only has 100MHz, and I don't really know, if you can user higher clocked RAM with that iMac. Maybe MRoogle will give you more information.

this wont be a problem at all, the PC100 and PC133 SD RAM are pin compatible. The faster ram chip will just run at the slower speed in the imac. I have a 400MHz blurbery G3 iMac with 1GB of PC133 SD RAM and there are no problems on OS9 or OSX
 
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