Hi, I'm new to overclocking and was hoping somebody mite be able to help me understand what some of the controls in the bios mean/do. I'm not necessarily ready to start overclocking yet I just want to start understanding everything so that soon I will be able to. I have a gigabyte sniper m5 and a I7 4670k. What is. CPU VRIN external override? VRIN? CPU Ring? CPU Vcore? PCH core? PCH IO? Uncore? Host PCIe clock frequency? Processor base clock (gear ratio)? PWM? Turbo power limit (wats)? Core current limit (amps)?