you are wrong...from where you got that numbers?
the 060/50 is not twice faster than the 040/40....it's only about 25% faster
in fact both cpu are idem core and a 040/50 overclocked runs at idem speed on integer like a 060/50
sysinfo reports
040/40 31 mips
040/50 overcloclked 38 mips
060/50 38 mips
That's a more accurate comparison.
At similar clock speeds there is little difference.
Of course the '060 can be clocked even higher.
The EC models (which unfortunately do not include a math co-processor) are good for 75MHz or higher.
