"The DDR Ref. Voltage option controls the initial reference voltage supplied to your DIMMs on system initialization, with the option of increasing or decreasing the voltage by 0.1V. Similarly, the CPU Ref. Voltage option offers the same 0.1V latitude for the initial CPU voltage setting."
Anyway.. has anybody played with them? I'm gonna see what, if any, effect they have on my max overclock... just gonna mess with the CPU one first.