mode, they must be virtually twins. In single channel mode, you can use them mixed EXCEPT that the memory bus can only run at the speed of the slower [DDR 266]. Thus the DDR 333 will perform exactly as DDR 266.
I have acer aspire 3000 and zv6000. someone gave me a RAM but i don't know whether they are competable with these two computer.
i am going to have two RAM, is it ok if one is DDR266 and the other one is DDR333?
Do they have to be the same?
thank you

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