Add a second 780 Ti, and yes, 144+ fps average on Ultra.
If we're talking about BF4 here, on Ultra 4X MSAA @ 1080p, I would average around 110-115 FPS with SLI 780s. Granted, 780s aren't as fast as the 780 Ti, but a single card will not average 144 fps on ultra. It -might- be possible if you don't use MSAA, and turn down a few settings.