> Now, here's my question - can either a 7500 or a 8500 take PC DIMMS ? I
> could not help but notice that they seem to have an obscene number of
> DIMM
> slots (6 or 8) and I have 5 128 DIMMS pulled from my post-departed PCs.
7000-9000 series PowerMacs used 168 pin 5v DIMMs, which are a pain to find
and can be very expensive (especially so in Australia). They also only go up
to 128Mb in size too, which restricts the maximum RAM ceiling unless you've
got an 8600/9600 (which have 8-12 RAM sockets).
>From the G3 onwards Apple used standard PC100 3.3v SDRAM. And there's a big
advantage to be had - PC RAM is dirt cheap, no doubt thanks to the big
market for it. 256Mb of SDRAM can be had for nearly half the price of a
128Mb DIMM. If you want lots of RAM, the extra initial cost of a beige G3
over a 7x00/8x00 will justified by the cheaper RAM.
If you're PC's Pentium MMX I or better, it would have had SDRAM. Older 486's
used the same 30 pin memory that pre-'040 Macs use (I have a drawer full of
1Mb and 4Mb SIMMs from a PC friend). I believe the original Pentium-class
systems used 72 pin EDO RAM, which also was used in '040 Macs and the first
PowerMacs.
I'm pretty sure no PC ever used the 5v DIMMs - they went straight to SDRAM.
Hope this helps.
Ben.
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