PC133 Works in the iMac G3

[68kPlus]

Yesterday I found a stray 512MB PC133 RAM stick, so I installed it in my iMac G3 and it worked first try.
EveryMac says they only support PC100 RAM, but I guess the iMac slows it down so it supports it.
Just thought I'd let you guys know as it might work for you too.

 

[Byrd]

Any half decent quality PC133 RAM I've found works fine in any SDRAM equipped Mac.

 

[Dude.JediKnight]

In general, PC133 RAM is supposed to be backwards compatible with PC100 and PC66 as well. Our old iMac DV worked fine with two 512MB sticks of PC133 RAM, but my Blue&White G3 never properly recognized those same sticks at their full capacity.

I believe certain older memory controllers don’t fully recognize the more dense memory chips used in the 512MB RAM sticks.

These days, EveryMac is usually spot on with this stuff; I’ve yet to find a situation where it said something that turned out to be incorrect. You sure you were looking at the right iMac model? A lot of G3 iMacs look nearly identical, so it can be hard to tell the exact model sometimes.

 

[Phipli]

I generally buy PC133 for my PC100 and PC66 machines, I figure it will run cooler.

 

[68kPlus]

In general, PC133 RAM is supposed to be backwards compatible with PC100 and PC66 as well. Our old iMac DV worked fine with two 512MB sticks of PC133 RAM, but my Blue&White G3 never properly recognized those same sticks at their full capacity.

I believe certain older memory controllers don’t fully recognize the more dense memory chips used in the 512MB RAM sticks.

These days, EveryMac is usually spot on with this stuff; I’ve yet to find a situation where it said something that turned out to be incorrect. You sure you were looking at the right iMac model? A lot of G3 iMacs look nearly identical, so it can be hard to tell the exact model sometimes.

Yeah, the one I did it in is an early 2001 Graphite (600MHz).