Solve : DDR RAM? GDDR-3 RAM? Whats the difference??

1.	Solve : DDR RAM? GDDR-3 RAM? Whats the difference??
Answer» I am choosing between an ATI Radeon X800 XL 256MB GDDR-3 AGP graphics card ($240) and an ATI Radeon X850 PRO 256MB DDR AGP graphics card ($225). I have a DELL Dimension 4600 with 512MB (max 2048MB) of DDR SDRAM. What is the difference between the GDDR-3 graphics card and a DDR graphics card? Can I RUN the GDDR-3 card in my COMPUTER? What about the DDR card? Which one would you choose? Thank you.[SIZE=12][/size]

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