View Full Version : iMac G3 Memory
Mar 5, 2008, 01:33 PM
I have an iMac G3, 400MHz - slot loading machine and want to upgrade the memory. I currently have 192 megabytes of RAM and would like to upgrade to 256 or more. According to the specs, the memory in the machine is 168-pin pc100 sdram. Is this MAC-SPECIFIC memory or can I just go to any store like newegg and order 168-pin pc100 sdram?
I'm not up for chunking $80 for just one stick of 256 MB as I've seen stuff advertised on mac specific websites. So, can it be any type of memory or does it have to be specific?
PC-100 168-pin DIMMs were a dime a dozen, and used in most comptuers prior to 2002, when it was replaced by PC-133 168-pin DIMMs. You can use a PC-133 chip if you can find it in a PC-100 system, but not vis-versa.
There is no Mac Specific memory (anymore) so don't worry about it. You should be able to pick up a 256MB chip for between $50 and $80. The cost is because they aren't made anymore, so there is a fininte number left in the world (much like the original Airport Cards).
Mar 5, 2008, 01:46 PM
Okay so it can be anything then.
Mar 5, 2008, 04:09 PM
Crucial RAM for your iMac G3 (http://www.crucial.com/store/listparts.aspx?model=iMac%20%28G3-400%29&pl=Apple&cat=RAM)
$54 for a 512 MB chip. I recommend you get the 512. It's kind of a waste to only put in a 256. I assume you have a 64 standard plus 128 so buy the 512 and get rid of the 64. So you'll have 640 rather than 384. I upgraded my iMac G3 last summer and put in a 512 and I already had a 256 in to 768 and runs well with Tiger.
Mar 6, 2008, 12:22 PM
$54 for 512 stick? They are gouging me. ARGGG. I may just go with the 128 just to have 256 for Tiger.
Mar 6, 2008, 12:40 PM
How do you figure gouging? Those 512 Mb modules were about $150 each when your machine was new. The prices have come down, but not as far as DDR2 has, because there is little demand/competition in the PC133 market anymore and foundries have switched to DDR2 and DDR3 component production.
Data Memory Systems (http://www.datamemorysystems.com/_apple_info/Apple_Slot_Loading_iMac_400MHz_Memory_1278.asp)
$49 for 512
$22 for 256
In addition, these must be 16-chip 512's and 8-chip 256's. High density generic 8 / 4 chip modules will not work.
Mar 6, 2008, 03:51 PM
Quit complaining and buy the 512 MB chip and don't waste your time. Having 256 in a system is useless. ;)