Like, kid… why don't you say that you want to edit uncompressed video??
Go ask them on the F******g Adobe site. This is about Archicad.
In that case, a second drive is right. It makes sense to use a remote firewire drive, say, when editing video because of the immense size of the files and the need to continuously transfer large data blocks. This burns drives out a lot.
In this case, you nedd BOTH RAM and the extra drive.....
Dwight Atkinson