Are you looking for real world differences or...?
PC133 SDRAM is a 64bit bus with a 133Mhz clock
PC2100 DDR is also SDRAM with a 64bit bus and a 133Mhz clock, but it's DDR (effectively doubles the clock rate, so consider it a 266Mhz clock) so you get 2x the peak bandwidth from it.
real world differences are 5-20% on a current Athlon depending on what you are doing.
The Palimino should get more benefit from DDR due to hardware prefetch.