Is there a difference between a DDR3 graphics card and DDR2? Do I need anything else?

For example, will I need new software or a new motherboard for a DDR3 card?I'm talking about the EVGA GT220 1GB DDR3 - Should I get the DDR2 or the DDR3 for an extra 10 dollars? What's the differences?So in summary, are the system requirements the same for a ddr3?

Different clock speeds. DDR2 is usually 800mh while DDR3 is either 1066 or 1333.You should get the DDR3 though.

DDR3 video ram is faster and newer than DDR2. Get the DDR3.