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[derringer3]

So is there any benefits to put same crystal oscillator on bppc card? For example my original oscilaltors are the following:

68040: 50Mhz. (so it is clocked at 25 MHz)
PPC603: 60 MHz ( so it is clocked at 210MHz)

Now i changed it to 66 and 66 Mhz oscillator.
(So now the cloks are 33MHz and 233Mhz)

But if i change the oscillator of the 68040, for example 69 MHz or anything else, is there any backward for the different clocks, or the "higher the clock is better"? (of course i want real speed advantage, not in sysinfo or sysspeed)

[derringer3]

Anybody up there?

[keropi]

I cannot understand exactly what you mean...
faster osc -> more mhz -> more speed
if the bppc runs fine with the faster osc. then leave it , just cool it enough!

[derringer3]

If i running my 68040 at 33MHz - it will communicate with a 33MHz to the bus/memory etc. And if i set the ppc at 66Mhz, then the 68040 clock and the ppc clock will be in syncron. (33Mhz*2=66 MHz) (yeah i know it can operate with assyncron)
So if i set this mode, is my machine be faster than i set it with a different mode?

[rkauer]

Will be no difference, since the processors are asyncronous. Maybe (I said: maybe) running it at syncronus clock you may have some issues when try to communicate with each other.

Just keep the two cool and you will have a very good speed up.

Like someone told me: don't get wishes: do it! Just keep in mind (again) the overheating of 040. 66/50= 1.32, means 32% more clock, and a LOT of heat more.