My Fury is hashing away @1.3MHs happily so I turned off my 7990 rig which @.19KWH wasn't really doing anything for me. So happy that I ordered another Fury! Sucks I have to wait a couple of weeks for it but that's OK.
You should go mine x11 or x13 coins with those rigs.
It's not really worth it at this point for that rig. I have some 750 Tis pointed at X11 though.