Uh, yeah. SVP is the 60fps from 24fps avi thing. it's pretty cool (and heavy on the GPU or CPU, depending on which codepath you use).
If you're mixing cards, then stick with Nvidia because you don't want two different GPU control panels installed, it's just bloat and annoyance.
However, if you're not using the Fermi for much, you might find that you can just eBay it and use the 77xx to do everything, assuming you're not still using analogue displays anywhere.
You'd want a triple-digital card like this