I noticed that Excel 2007 only uses 25% of the processor (Intel Q6850). I
noticed this when processing 80K rows with a single formula each (in this
case: year() ). This is very kind, to leave me with 75% for other things,
but I would like to use 90-100% in those cases to get it done faster. Is
there a setting to activate the rest of the machine's processing capacity?

Thanks,

Hans