Question about Power Supplies

Yeah, that new PSU you are looking into will work, the 20+4 thing is that some mobos require some extra power and you connect an additional 4 pin plug besides the usual 20 pin, others have the 24 pins right off, but it seems the PSU you are buying can handle all this variations anyways. Considering all the stuff everyone else told you right now the only thing left to consider I'd say would be the outlet.... what do I mean, well this is unlikely but I say it is a good practice to add up the power of all the things you have plugged to an outlet and calculate a rough estimate of the current, what's the purpose of this, so your breaker(if you got one) doesn't go off at the worse moments, just divide the power by the voltage of your outlet(120 I guess US should follow the same standards we do, heck ours is a flat out translation). I'd say if it is below 30 Amps it's completely safe. Well I mention this because you are going from a 120W PSU to 400W... and I have no idea of the conditions there.

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