^^^^^that all depends if the pc oems uses them by default or not in their bios since the release of haswell and since those settings in an pc oem custom bios aren't displayed for the most part no one knows except for the oem maker. so it's hard to tell how many haswell and up based oem pc's have the c6/c7 state actually enabled or not. I know many 3rd party motherboard vendors turn it off by default in the bios so it doesn't cause conflict with any non haswell ready based psu, but many psu's have supported that low state anyhow for years unless you have a really old psu or a really cheap one. take for example the Allied AL-D500EXP psu that's been out since 2007 and newegg's website states that its haswell ready. so it's not like...