I personally have all of my computer stuff on a 700$ industrial battery back up system with OSD for monitoring(which lucky for me I got for only 250$ what a steal). Florida being the lightning capital has quite a bit of power surges, not to mention I checked with my multimeter and was getting 126 VAC instead of 120 in from the wall. I have had numerous power supplys for computers just die because of over and under surges.
In short, you see that big nice 2k computer you just made? its nothing with out good power.