If you get orange and green lights, it means you are over-volting. It is possible to lower the voltages manually until there are no lights at all. An i7 930 default voltage is 1.2V, but you might be able to set it lower than that depending on how good your specific CPU is. For example, my i7 920 C0 could run at 1.15V, but my i7 920 D0 can run at 1.0V. When you have voltage below 1.2V there should be no more orange light. To get rid of the green lights, you need to set the other voltages lower too, I can't remember what to set the voltage to however. From memory, the QPI voltage can be lowered to 1.1V, DRAM voltage must be set to whatever your RAM package specifies it to be.