That picture of the video card isn't too clear.
You mean this one (?):
http://shop.store.yahoo.com/a-c/gfbasgeffx12.html
They'll work just fine.
AGP 2.0 isn't voltage. It's telling you that the dedicated interface,AGP, between the card and the cpu will move data at speeds of up to 1 gigabyte per second .
2.0 is a speed standard not power voltage.