I have a Slot 1 Pentium III running at 800 MHz with a FSB at 100 MHz on an ASUS P2B. It's close to what you want, but I had to use a beta version of the BIOS for it to work.
In other words, that's very high end for this chipset.
You'd be safer with a Socket 370. In my experience, I've never seen a 440BX -based motherboard that allowed more than 100 MHz for the FSB.
I tend to prefer this chipset as it is super stable, and it's the same as I experienced back in the day. Besides, the 200 MHz clock difference was not worth it for me.
Also, I needed an ISA slot, and it's next to impossible to find a motherboard with that, if you want to have a 1 GHz CPU on it too.