Unable to get low QPI Voltage

When ever I set the QPI Voltage to 1.3v or 1.35v, it wont work(1.35v Boot but Crash), I haven't tried 1.4v because i think it's not in the same voltage range of QPI... Im looking at Aida64 and it said my QPI Voltage is at 1.525v?... I Overclocked my CPU to 3841MHz(23x167) and Also overclcoked my RAM from 1800MHz to 2009MHz at 1.6v DRAM Voltate... On my PLL Voltage, i set it to 1.8v... Why am I unable to get low QPI Voltage awhile other people able to get 1.2687v QPI at 167x23 CPU Speed the same as i AM and i stil lcant get 1.3v or lower?
Scroll down to the link where it shows those settings...
http://www.clunk.org.uk/reviews/xigmatek-gaia-sd1283-cpu-cooler-review/Page-6.html