General • Re: What limits maximum external clock freq on GPIN0/1?

You got a good chip. Now buy 10000000 more. Tell me how many work? At 50 MHz the number is likely 90-99 percent of them will. Above that maybe 75, 50, 25, etc. percent?

That's exactly it. It's the silicon lottery, as they say.

This is the exact reason why some chips will over clock to a phenomenal rate and why others don't go close.

In fact, Intel used to use this to their advantage back in the day (probably still do). If a chip failed at 200 MHz but all the tests passed at 166 MHz, it was then stamped as a Pentium 166, etc...

Statistics: Posted by Lonewolff — Tue Sep 03, 2024 2:37 am

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