BAP, I'm trying to remember, did you end up with a Kepler-based video card on that last round of upgrades? That's a NVidia card numbered 6-something i.e. a 660 . See the link, there's a new hopefully optimized core that should unleash previously untapped power.
Everybody else, if you've been holding off, it's almost the time if you're upgrading.
http://foldingforum.org/viewtopic.php?f=74&t=22793#p227079