GDDR5 vs DDR5 - Which is better?

Question

I'm looking at getting a new computer.... which is better for video memory, GDDR5 or DDR5 ?

update

that makes sense considering I'm looking at video cards...

http://www.newegg.com/Store/Category.aspx?Category=38&name=Video-Cards-Video-Devices

Answer 1

There's no such thing as DDR5. If they are advertising DDR5, they mean GDDR5. All the G bit means is that the memory is specifically designed to be used for graphics.