Though it's not an Intel chip, it does support PIII and
DDRAM
Some PIII's do support SMP, Intel states Celeron II's do not, though they have said that before about Slot 1 III's, and people have proven them wrong. Though I've tried the CII's myself and it didn't work, didn't boot on my MS-694D (dual CII566). I know the Celeron 1 did do dual, Abit had a board.