The CV64-3D does not have pass through. You need the scandoubler module for that. You A3000 already have a better scandoubler/ff but the CV64-3D can not pass it through auto. The scandoubler module is ultra-rare to find.
I think the CV64-3D is somewhat dated card since while it can handle 1600x1200, it is only in 256 colors. It is not 1998 anymore when 1024x768 was considered hi-end. But it will definitely be faster than your Picasso 2.
But other than that it is as usual with Phase 5 products an excellent piece of hardware. Picasso IV though is the ultimate Zorro graphics board.
