I5-3570k...Is the displayed CPU-Z "Core Voltage" Correct??

Okay, I need something cleared up here. I'm a rookie overclocker and I've got my i5-3570k running at 4.2 GHz. I set the voltage in the BIOS to 1.2 just to try it out. (I was going to go lower later, just wanted a reference point.) Anyway, my CPU-Z is telling me that instead of 1.2 volts, it's at 1.328 volts. :o I've heard that kind of voltage does about 4.8-5.0 GHz. So can any overclockers please explain what's going on here? I don't want to over-volt and burn up my chip... :??:
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More about 3570k displayed core voltage correct
  1. If you set OC to Auto or used auto overclock from some manufacturer, they bypass any bios settings you've made...

    Most 3570k will do 4.6+ with 1.32V (my 3770k do 4,83 with 1.35v so not much more...)
  2. OK, It was set to auto in the BIOS so that must have been the reason. Now I've got another question...I tried to get to 4.3 GHz on 1.200v since it did 4.2 on 1.195v, but I get a blue screen on startup. :( It seems like any voltage I try doesn't want to push the chip past 4.2. Also I have an Asus P8Z77-V LK motherboard, and I've heard it's not the best for overclocking since it has trouble with voltages in extreme overclocks, but 4.3 GHz is not very high. Is there something else I need to set so I can achieve 4.3? By the way, my temps are pretty good. My Antec Hydro 620 keeps it under 65 degrees Celsius during a 12-hour Prime95 test (Which surprised me, because people say the 620 isn't sufficient for a decent overclock.)
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