follow the instructions as listed on that site. they aren't for fun, they are there to help you. that is, don't just jump to random settings like that as you'll have no clue what is holding you back... start by seeing what the max is that your board can handle by setting multiplier to 6 or 7, memory to 100... then see what your chip can do... then see what your memory can do... then consolidate it all.
guessing like you're trying to do now rarely works and usually produces unstable results at best.