PC133 or PC100 RAM?

[csean at poc.it]

I have 2 banks of RAM, supposedly PC133 SDRAM DIMMs, Kingston brand, that
work fine in my G4 Sawtooth, but show  up as PC100 (one is 322 speed and one
is 222) in Apple System Profiler.

Is that normal?
They are the only 2 banks installed: 1 is 512MB, the other 256MB.

Thanks,

Chris