one of my mate got P4 2.4GHZ, he said he can overclock it up to 3.8GHZ with stock voltage, i said it'll never work as P4 chip always get very hot and melt easy. so we made a small bet, lol i was wrong, he overclocked it up to 3.8GHZ on standard heatsink and air-cooler. it was few weeks ago and still running very well. it was soooooo fast lol
but yes sadly it'd would be extremely hard.......maybe impossible to get 24GHZ from 2.4GHZ lol