I am looking into a good back up power supply, but don't know what to get or look for. I need it to power up my current computer and the one I will be making soon(may or may not be put off until the release of M2).....The psu I plan on getting will is going to output of 510w and 34-38@12v I think..........Ups needs to power up the computer but would be nice if I could power up an lcd monitor on it too, with headroom in case I add more in the future. I need it to make sure my computer is supplied with plenty of constant power so I can run my system on 50+ year old wiring that was outdated and cheap even in the day. I want to make sure my computer doesn't turn off suddenly due to unstable power..........Want a quality reliable one. Thx for your time.