Well, my main machine is a BP6 with a 333 and 366 Celeron running at 110 bus ... so a 550 and 600. Nice board... in't it?
But the machine with the G400 (the other has a Tnt2u) is a Tyan Trinity (Via 133a chipset)(This board badly needs a bios update, but it has AGP4x and Ata66 as well as 133 for when I get a P3 later). That really shouldn't matter, though.