The 1Ghz processor will work as long as its coppermine cored.
There is no need to set dipswitches for frequency as I recall, as the
process has fixed frequency.
When I took my 550 slot 1 out of a 6ba I just plugged my 1ghz in and it
worked without changing anything else (apart from going to latest bios 1st).
Jc.
My GA-6BA manual only shows DIP switch settings up to 950MHz (1,2,3&4 all
set to OFF). JP8 should be set for 1,2&3 OFF (no jumper connected) for
100MHz FSB.
abenn