Damn, them 600 series cards are beast. I figured that my TWO GTX 470's OC'd to 720MHz cores (as in all my latest scores) could hold their own against a single 670/680. LOL NOPE.
Time for an upgrade.
Until then I'm going to try and increase my Memory Clocks a bit more, see if I can't get them at 480 spec (my Core and Shader clocks are already higher than 480 spec). I wish I could find some water blocks for my 470's, I'd put them under water instead of upgrading for a couple more years.