I notice they sell the mysterious MC68060FE133.
Has anyone ever been able to confirm that these are genuine parts?
All I've ever seen is rumours that they were manufactured by Freescale for secret military projects long after they had offically stopped making the 060.
The problem with such speeds isn't the CPU - it's that the boards that use the 68060 aren't ready for such high speeds. The RAM access and the support chips are just too slow to be of much use above 50MHz (though I believe up to 80MHz is still an appreciable difference, it's getting to be quite a headache to get that high because of the amount of overclocking).