That's boost overvoltage as you might know standard is 0,988 V. 1.175 is also the most overvoltage any unmodded GTX670 can do. Higher voltages are only (as said before) possible with unlocked cards (like Lightning) or hard modded cards. Since no one promises the PE is unlocked no one promised more overvoltage.
As you can also overvolt memory and PLL (what is not possible with other GTX670) you have more potential for oc.
What does the core voltage slider do then? Since my voltage doesn't change if I move it up higher.
It's kind of pointless to say triple overvoltage included when it doesn't actually have that feature. I guess it's a good way to sucker people like me in to buying it. Since a normal card can boost with 1.175 it doesn't make since to say this can do overvoltage but still only do 1.175. I guess it's time to return this and just get a lightning then.
Edit: I quote from the website, "Triple Overvoltage: adjust the voltage of GPU, memory and PLL to unleash the potential of graphics card." What they should say is that you can only adjust it to make it lower.