Thursday, 20 June 2019

memory - Is a DDR3 MB compatible with DDR2 RAM?


If a motherboard's specifications say it supports DDR3 SDRAM sticks, would I be correct to assume it is also compatible with DDR2 RAM? Am I wrong, or does it depend on the motherboard?



Answer



No. DDR3 and DDR2 are designed differently. Both have different key placing so they won't even physically fit, not to mention differences in electrical voltage:


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There are motherboards which will provide entirely separate slots for DDR2, but you cannot use DDR3 in DDR2 slots, or both types together.


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