Originally Posted by Indigo
There are so many things wrong with this statement... I don't know if I even want to start on it.
More wattage does NOT equal better.
Quality is better than quantity. A $25 600 watt power supply will NOT be of the same quality as a $70 600 watt unit.
Ideally, most users systems are fine with about 650 watts for a single GPU quad core with 8GB of RAM and a hard drive or two. Only when you get into SLI/CrossFire, multiple drives and water cooling that you need more than that.
I never said more wattage is better. More wattage certainly couldn't hurt and would lay the foundation should you want to upgrade in the form of adding drives, video cards, overclocking, etc. What you don't want to do is replace a 500W PSU with a 300W unit. If you have a computer that you didn't build and the power supply goes bad, it's usually a good idea to replace it with one that has the same wattage. Personally, I like to use a power supply that has a little more wattage than I need so that it is not being stressed when the system is under load. A little headroom never hurt.
When I said that any ATX power supply would work, I was being very general. Any ATX power supply would work but different power supplies will give different results.
I absolutely agree that a $70 PSU will be of better quality than a $25 one.
Hope I clear up any misunderstandings.