Well, that was quite useless and I'm surprised no one has mentioned it.

1. What you really care about is consistently having a framerate of more than 60 fps. A higher fps count can actually be worse.

2. Relatively few linux users have a gtx 680. It's a 500$ graphics card and there just aren't that many linux applications who needs it.

3. If this down-scales linearly, which it might not, we are looking at around 3 fps difference at 60 fps.