"The first cardinal rule of o/c is that nothing is guaranteed."

Yep, I bought a couple of PentiumIII E chips figuring I'd hit those glorious 155-166 FSBs. Well the 850E I bought only does 124 FSB for 1055 mhz on air cooling, not bad actually. A couple of guys in the Overclockers.com database need water cooling or Peltiers to hit this. But geez, there are a couple of guys who get 133 FSB with the same stepping.

And shoot, I could have bought a PentiumIII 1000EB and get 133 FSB guaranteed!

So be wary of 100 FSB CPUs, you could get a lemon and be real disappointed.