That reading is from Afterburner 2.2.0 beta15 via OSD because of the dynamic nature of Kepler - that was with a single GTX680 on 301.42s as I never tested single GTX680 overclocked - certainly no SLI going on there.
I recently moved on from AMD, with all the changes Nvidia made I didn't think anything of it but now my attention has been drawn to it, it does look high. If those clocks are combined in Afterburner then it is odd how when using single GPU, the boost information is the same.
Currently using 304.48 betas and boost information is not displayed/supported in Afterburner, either because they are betas or the driver fix of correcting the cards using lower clocks: "Fixes an issue where some manufacturer's factory overclocked cards default to and run at lower clocks."
Here is a couple archived screenshots from the 301.42s at the time,
first one single GPU no overclocking - the
second screenshot SLI overclocked. This shows exactly what I've been reporting and any issue is to do with Afterburner and not myself making a basic mistake whyscotty