my friend jsut built a p4 3.0 system with an asus p4p800-e. 1 gb of geil ddr400, but he is using the psu that came with the case. nzxy elite tower, came with an orion 400 psu. 17a on the 12. his pc scores im 3dmark seem about rite i guess 979-999 cpu points, but 3d score is only 9100. could it be the psu?