I currently own a Back-UPS ES 725 Broadband unit, which has an output power capacity of 450 watts. This is the high-end unit for the home-end. My current PSU is at 420W and I'm thinking about upgrading because it's a POS and the fan is making this hideous noise! I'm interested in Antec 480 NeoPower or whatever it's called and I was wondering if the Back-UPS unit would be able to handle such a power unit? I may be answering my own question here just going off the numbers, but wanted input. The next unit to support higher output is for business computers and sells for $189! Another question, if the PSU is 480W.. does that mean the PSU is drawing 480W from the wall outlet/Back-UPS or is that just the maximum power specified for that unit it can draw if the hardware components inside required that much power? In other words, is the PSU constantly drawing the specified maximum power capacity?