The power supply is the foundation of any computer. Without it, all that expensive, high-performance gear just sits idle. You can go without a case. Some people do. However, none of those bells and whistles are going to make a peep, if you don't have a power supply. Not only that, but you should never skimp on your power supply. I've seen more than a few computers taken out by a failing PSU. I've even seen one catch fire at a Lan Party I was attending. The site of a grown man crying isn't pretty. It is especially ugly when all of his friends are playing video games and making fun of him. Don't let it happen to you. Get a good power supply. Coincidentally, I'm reviewing the In Win 850 watt Commander PSU today. We're going to find out if it has what it takes to keep your computer working safely at peak efficiency.