Actually, with this PDQ I am posting on now it says 450Mhz in OS 9's System profiler (I have pictures if you want) but all other CPU speed reporting apps in OS 9 and OS X get it right, 300Mhz(as the die is marked).

I highly suggest running Gauge Pro on it to see the real speed.

I can post it somewhere if you can't find it online.

*Edit

You just can't have too many copies of useful old apps floating around online.

http://www.divshare.com/download/1502186-eae