i mean like run the e8400 at full speed easily.. the 780i supports 45nm architecture! it should run like an e8400 should run with an out-of-the-box 780i right?
^ yep. If you got the board before, or shortly after the 45nm CPU's were released, it likely does not contain the BIOS information to recognize the CPU. Only a BIOS update can make it work.