>> If the 7300 was a 200Mhz. originally, >> you've got a 50Mhz. Bus Speed. > > It used to be a 180 mhz. Not as good?
The bus speed is less fast. 40Mhz.
This subject keeps coming up. I though knowledgeable list members claim the processor sets the bus speed not the motherboard. ????
The sync clock sets the system bus and processor speed - and it lives on that processor/daughter card. This is done to keep the processor and system bus at reasonable speed-multiples of each other. The higher the "multiplier", the less efficient the system becomes (processor begins dying of boredom). It also makes for more cost effective motherboards - one size fits all, as it were.
On the Power Mac 7300:
The 120-MHz processor card runs the system bus at 40-MHz.
The 180-MHz processor runs the system bus at 45-MHz.
The 200-MHz processor runs the system bus at 50-MHz.
- Dan.
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