I've got an E6420 and have been doing some overclocking (2.8GHz stable on air so far) but I'm informed that I'll likely need to up the VCore slightly to achieve 3.0Ghz. Not knowing what the stock voltage is means I have no idea what to up it to, and my BIOS doesn't show me the value when it's set to 'Auto'. Can someone tell me what it is?