Are ddr2 and ddr3 compatible?
Score: 4.8/5 (16 votes) DDR3 is not backwards compatible with DDR2. While both types of modules have similar numbers of pins, the notches in the PCB are in different locations. In other words, a DDR3 module cannot be placed in a DDR2 memory socket, and vice-versa.Can you use DDR2 in a DDR3 slot?It w...