I am undervolting an i7-4500U in an Acer TravelMate P645-MG.
My dynamic CPU voltage offset was at -85.9375 mV. Occasionally when I stop an XTU stress test at that voltage level, the computer crashes. The stress test itself was stable.
As of now, I am running Prime95 at a dynamic CPU voltage offset of -84.961 mV.
On a side note, I plan on undervolting the CPU cache and the IGP. I also want to underclock the IGP because I have a dedicated GPU to handle gaming and I doubt movies would demand that much GPU power, but 'm confused by the "Processor Graphics Ratio Limit". Should I leave it at default or set it to "0.5x"?