depends on which chip it is
if its the 133 then yes but not much
if its the 100 then yes by a lot
reason being
the 133 has a multi of like 4.5
so for every 1mhz you overclock the FSB you get 4.5 MHZ CPU speed
the 100 has a multi of 6
so for every 1 mhz you overclock the FSB you get 6 mhz CPU speed
may not seem like a lot but when you start plugging in 20 or 30 you end up with
100mhzfsb
30*6=180+600=780mhz
30*4.5=135=735mhz
and on a CPU with only 800 mhz 50 is a big deal
i saw somewhere that they could OC almost to 1ghz on the 100FSB and only like 800 something on the 133
this is all with exceptional cooling