it is some what hard to predict capacitor aging. since it is effected by how load the psu is, if it is loaded 24/7 and near say 90% load all the time. then you could expect to need a replacement in about 3-4yrs best guess here. since i ran a older ozc powerstream 520 for about 4yrs. started to have some odd problems here and there, so i thought i would clean it out. after opening it i could see the caps bulging so i off to tech support for an RMA since it was still under warranty. i started using that power supply when i bought the intel E6400 when it first came out with a abit p35-pro and 6800U. think it was around the time i went with a i7 920 setup when i did the rma.
if you could list all your parts, a suggestion on the psu can be made. i really dont trust the calcs for telling you what psu to get. i know there is one out there that can take into account cap aging but im not sure what method they use.
