One of my friends just built a new system and he wants me to help him overclock it. Problem is, I've never used a DFI board before. I usually stick with budget boards because I don't have a lot of money. I've never flashed a BIOS and would like to know if its necessary for his rig. He's got an Opteron 170 Dual Core, DFI NF4-UltraD, 1gb dual channel kit of budget RAM, and a 6600GT or 6800GT, can't remember off the top of my head. I'm not looking for the biggest OC of all time, so is it necessary to change the BIOS and if so, can you provide me with a good link on which BIOS to use and how to flash it. Thank you.