16GB of vram can run the 7B for sure, I'm not sure what the most cutting-edge memory optimization but the 15B is going to be pretty tight I'm not sure that'll f

16GB of vram can run the 7B for sure, I'm not sure what the most cutting-edge memory optimization but the 15B is going to be pretty tight I'm not sure that'll fit with what I know of at least, I've got it working at a bit over 20gb of vram I think at 8bit. If you can't fit it all in vram you can still run it but it'll be slooooow, at least that's been my experience with the 30b.