The iMac G3 memory slots take PC100 SDRAM.
The 266 Mhz iMac G3 came with 32 MB of PC100 SDRAM, and supports a maximum of 512 MB. The Beige G3s came with 32 MB of RAM and support a maximum of 768 MB of PC66 or higher SDRAM.
Yes. For example the iMac uses PC2-5300 DDR2 SO-DIMM SDRAM memory.
Yes. It used PC133 SDRAM modules.
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The Summer 2000 iMac came in only one screen size, 15". It had a 450 MHz PowerPC G3 Processor and came in Ruby, Sage and Graphite. It came with 128 MB of RAM, but this could be upgraded to 1 GB using two modules of 512 MB PC 100 or 133 ECC sdram.
No, you can only get that discount on a new iMac not a refurbished iMac.
There is no "iMac Air".
The original iMac was the G3 which came out in (1998). It was followed by the G4 (2002), then the G5 (2004), then the Intel iMac plastic version (2006). The 5th iMac was the aluminum iMac which came out in (August 2007), followed by the iMac Aluminum Unibody (2009). The newest iMac is simply called 2012 iMac and it came out on November 30, 2012.
An iMac is a computer, but a computer is not necessarily an iMac, so they are not the same thing.
The iMac
The original iMac was created in 1998.