It's a kinda odd issue, here's the deal... My mobo only have 2 options to overvolt the NB and SB, the NB voltage control and the MCH voltage control, both only have 4 options, normal, +1,+2 and +3. Now that my "energy" paybill (am I saying it right??) came a bit high I decide to underclock my system to save some energy, so I set it to stock almost all my voltage controls. Underclock my CPU to 3.2GHz using stock voltage (1.18v), same as the NB and the MCH options, the weird thing is that the MCH overvoltage control when I set it to NORMAL the temp raises from 48C idle (51C load) to 51C idle (55C load) rather than when I setted it to +1, now I resseted it to +1 to low the temps, but I want to know why having the MCH overvolted low the temp rather than having it under stock voltage. Oh, BTW, to read the temp I use the sensors that come with my NZXT Blackline case, I think It should be pretty accurate since It are physical. Thanx.