On Oct 16, 2005, at 2:30 PM, PCI PowerMacs wrote:

From: [EMAIL PROTECTED]

Depending on the CPU speed, the 7600 bus runs at anything between 40 MHz
and 50 MHz.


Of course, as the bus speed is always a sub-multiple of the CPU speed.

Nice coverage of bus and multipliers. Thanks.

I just picked up a MACh Speed G3. It is very much and older one with rotary switches for the settings. I got it with switch 2 set to 3 and switch one set to 7. As I read the chart that produces a 266MHz G3 speed on a 41 MHz bus.

I was thinking of giving it a try in my Mach V 8600 which currently has a 300MHz 604ev. From looking over your post I see that you state a Mach V machine always runs with a 50MHz bus. It appears from he chart that this upgrade card does not support that bus speed or at least can not be set to use that bus speed,

Any one out there familiar with this card. Does it require software to make it work? What is the oldest OS that it would support? Over all I am not sure that my Mach V machine needs much upgrading for it is very nice as is.

thanks
bill



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