PSU fan making a lot of noise and vibration..should I worry about this? I blew out most of the dust with a bulb..and pushed the center of the fan..it's quite again now, but should I replace it immediately..this is a 2 yrs old Aerocool strike X modular in an SG13..I really need to use this pc for review right now, should I take out the R7 260x to lessen the load?