I am going to unlock my 1800+ and set the multiplier a little higher. to do that I have to use jumpers on my mobo. my question is on the description in my manual for the different multipliers. they go from "Ratio By Cpu"(standard), to 5 to 12. and then there is a 12.5(higher). what does that (higher) mean? does it mean I can set the multiplier to 12.5+? if so, how?