TDP isn't the amount of power component consumes. Components consumes more than TDP.You need 1.5 times as large capacity as TDP if you want to operate safely/stably.That is why hardware manufacturers is telling you to prepare more capacity than its T...
You can calculate here..http://www.extreme.outervision.com/PSUEngineIt seems it's not good. So you should expect clock down when you max out the CPU and GPU. And PSU is expected to be used under 80% of its normal rated power: 328W, otherwise it wears...