View Full Version : Ram for a B/W G3

22nd June 2004, 05:17 PM
The recomended ram for a B/W G3 Mac is PC 100 SDRAM.

Can any one tell me if PC133 SDRAM can be used in the B/W G3?

As far as I know the only difference is that the PC133 is capable of operating at a higher speed.

Thanks in advance :unsure:

22nd June 2004, 05:39 PM
Should be fine, I did it in my old B&W. It just runs at pc100 speed instead of pc133 (due to system bus). Make sure you get the right density RAM though.

24th June 2004, 05:12 PM
I've got a B/W G4 Yikes! and found that it wouldn't work with single sided 256MB DIMMS. So I pulled two double sided PC133 DIMMs from a PeeCee and they worked fine.
You'll be paying a premium now for double sided 256MB DIMMs.

24th June 2004, 09:01 PM
as long as the speed of them is no less than PC100, they're fine...BUT!!! like larfinboy found, they have to be doublesided.

25th June 2004, 07:58 AM
Have 4 x sticks of generic 128MB PC133 RAM in my B&W, varying single and double sided. No problems!

Any SDRAM above 256MB needs to be double sided, if it isn't the machine won't boot. Unfortunately, this type of memory is increasingly harder to find, having looked for some a while back not one store could get it (and it was costly, ~ $150 for a 256MB double-sided stick). However, there is still a lot of this out there in the second-hand market.

Also, you will get better memory bandwidth using SDRAM with SPD ratings of CAS 2 instead of CAS 3, although in real-world tests this doesn't do much.