Originally Posted by Serephucus
Yes it is. Even if you have a 2600K, overclocked to 5.0GHz, you'd still be using less power than my CPU, by anywhere up to 100W. Even if you have six hard drives, odds are you're using less power than my older, less efficient hard drives. I've run my system, with SLI 580s, at 970 core each, from an 850W unit. I could run my current system from an efficient 550W unit quite easily.
And even if you get the highest efficiency at 70% load or whatever, we're talking at most about 3%. Unless you're gaming twelve hours a day, or folding or something, your computer is going to spend most of its time drawing about 150W, meaning you'll end up paying for that extra wattage through your ESB bill, probably about an extra €5 a bill, if not more, which completely blows your argument out of the water.
I'm just saying this because it's something I learned myself quite recently. I was running a single 580 - and for a while SLI 580s - from a 1200W unit, and it just wasn't needed.
But you missed the no noise part. AS long as my PSU is running below 70% the fan doesn't turn on. To me that is sweet. I love a silent pc and witht he hardware I run, with dual pumps, 4 hdd, 2 580's 2600k at 5ghz right now, and a radiator with 9 140mm fans, being able to run my pc at 23db is truly amazing and fantastic.