well the weird thing is, ddr had a 184-pin dimm while ddr2 had a 240-pin dimm but ddr3 still uses the 240-pin slot. so i think you might be able to fit ddr3 into the motherboard but of course it wont work. unless the little notches on the ddr3 ram itself have changed from the ddr2 ones, in which case the ram wont fit.