My UPS is flaking out, and it's a really old one I got from work that was a 'server' class UPS. I don't want to drop $999 on the thing, as that's what an equivalent of what I was using go for. However I want my battery to last more than oh, 30s so I hope to size it right. Any experience from anyone running a UPS on one of these things? The UPS sites aren't much help and if the tech specs are to believed if it draws 12A at 120W that's a 1440W requirement for the power supply, and that seems a tiny bit high to me, but I might be wrong. I'm running the 2.66GHz dual core, the ATI1900XL, and 4 500GB drives in it.