I've got one of them...
A cB0 700e runs rock-solid at 933! (though not any higher) (@1.8v)
This was using Mushkin cas 2 memory, generic memory limited cpu to about 856.
At 933, both the Creative Labs Annihilator Pro and the ATI AIW Radeon work very well.
The built-in ata100 controller is nice for allowing an IBM hard drive, a dvd rom, and a cd re-writable to each have their own IDE channel.