I bought a neopower 480 watt psu about three years ago. I believe the psu had just hit the market. So I just rebulit the rig and kind of concerned that the psu will fail on me wrecking my new setup. My specs are e6550, p35-ds3l, two gigs ddr2, 8800 gt 512, pci sound card, one dvd drive, one hhd, four 120mm fans, one 200mm fan. I have had no problems with power yet. Does it make sense to replace the psu or shoud I let it ride until an issue pops up?