Ddr vs ddr2?

[ripken204]

what exactly is the difference between ddr and ddr2?

is it that ddr2 has 2x the bandwith?

and which one is better/faster?

 

[luvhuffer]

Hi. Here is something to read that will explain it better than I can.

http://download.micron.com/pdf/pubs/designline/dl3Q03.pdf