cpu clock multiplier

[sonoma1993]

What are the advantages/disadvantages of having a higher cpu clock muliplier

What are the advantages/disadvantages of having a lower cpu clock multiplier

let say both a 2.0ghz athlon xp and 2.0 pentium IV pretty much have the same performance.
the athlon has a 200fsb(400mhz) at cpu clock multiplier at 10x, while the pentium IV has the 100mhzfsb(400mhz) with cpu clock multiplier at 20x, so yeah both having 2.0 ghz cpu speed. now how will clock multipliers effect how those 2 cpu will perform?

 

[ElTorrente]

The multiplier is useful only to help getting memory speed up. By enabling a higher FSB and lower multiplier- you can OC your RAM speed. The CPU doesn't perform and better or worse with higher or lower multipliers- all that matters is its final mhz.

 

[RichUK]

EDIT Skimmed through: The CPU multi only denotes processor speed, using a lower multi to achieve/use a faster BUS would improve performance more over a slower BUS, especially with regards to the example you have given.