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DDR ram is it backwards compatible

Ravenit

Senior member
I have a moterboard that can run up to pc2700 / 333mhz ram, can I use a stick of pc3200 / 400 mhz ram ram? If yes can they be mixed together like say PC 100 and 133 on a 100 mhz bus.
Thanks
 
You can mix DDR SDRAM with other DDR SDRAM and DDR SDRAM speeds.

You cannot mix DDR SDRAM with SDR SDRAM. Different voltages, different number of pins.
 
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