If you have a DFI board, you should have a couple of different ways in your BIOS to up the cpu voltage. DFI boards have the most comprehensive and advanced BIOS settings of any board made, and you shouldn't update your BIOS unless you have a reason. A good reason would be like if you are going to upgrade your CPU and your current BIOS does not support the new CPU. Updating just because there is another one available.... not always a good move.
Read your motherboard manual to learn how to use your BIOS settings.