im wondering if my current enermax 600w noisetaker psu will be ok, im getting a new evga 780i mobo and a quad 6600 go, currently have 1 8800gts 512mb but gonna get a second gts for sli, my psu is about 3 years old and ive heard they can degrade over time, hoping to overclock the quad to at least 3.6ghz using an arctic cooling freezer 7 pro, so will this old psu still cut the mustard.