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can I use PC 133 DIMMS in my Sawtooth? Must I stay with PC 100? What's the difference? Are PC 133 modules "better"?
 

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PC-100 and PC-133 are both the same RAM type, but run at different speeds depending on your system bus. Your G4/500 has a 100 MHz system bus, so you'd need PC-100 SDRAM - however, you could use PC-133 SDRAM, but it'd run at PC-100 standards. PC-133 SDRAM is designed for 133 MHz system bus Macs.

Make sense? ;)

Your G4 can hold 2 GB of RAM, but the MacOS can only use 1.5 GB of RAM, so don't add 4 x 512 MB DIMMS. ;) Just some useful advice.
 

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I use PC-133 RAM on my Sawtooth because I may someday get a newer G4, and I want the flexibility of being able to switch the RAM. Mixing speeds seems to work OK. I used to run one each of PC-66, PC-100 and PC-133 in the 3 slots of my beige G3 (66 MHz bus) with no apparent ill effects.

Cheers ;->
 

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I was told that PC-100 were discontinued, I only see PC-133 in stores , never looked into it..

I have no problems with 133 in my G4 400
 

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