For PCI-E 2.0 2D and 3D benchmarks set it to a value of at least 1.4V to avoid CB. If you’ re using a PCI-e 3.0 VGA then you can choose to use Nvidia PowerMizer Manager( nvpm manager) or in the BIOS set a high VCCDMI _ PEG( 1.8V +).
If you’ re using a PCI-E slot from PCH then VCCDMI _ PEG doesn’ t affect that slot.
CPU Core PLL Overvoltage(+ mV): This setting depends on your CPU. Start without it and try to raise it to see if it helps your CPU. Values up to 285mV work ok on LN2.( Default value is 0.9V)
PCH Core: You should raise this setting together with VCCVTT. We always set it at 1.12- 1.14V. If your system reboots and it goes to code C5 with a blank debug LED then raise this value.
CPU Vcore Loadline Calibration: Even though“ Turbo” should work just fine we prefer to set it at“ Extreme” just to be safe.
Just to be safe we prefer to always make 2 profiles. The first one is without these voltage settings and the second one is with them. We then cool the CPU down to-70C or so and then load the second profile.
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