The Inquirer reports that it's not often that rival graphics chip firms Nvidia and ATI use the same marchitectural tactics. But, this time around, it seems they don?t have any other choice. Nvidia?s upcoming NV40 and ATI?s R420 both support memory in the types DDR 1, GDDR 2 and GDDR 3, but both companies will be sticking with GDDR 2, at least at first.