It's supposed to be a good board, but it's limited by a 10% change in voltage.
Get the P3-700 if you do. Most likely won't have a big change in voltage. 1.65 default?
The Cel 566...1.5v default, usually 1.7 or 1.8 to get to 850.
Or, you can get the slot 1 equivalent, 6VCA.
You can then change...