I found a professional review that measured the total system power consumption at the wall outlet with two 7950s in Crossfire under full load, and their system pulled 450W at the wall outlet. Now, that's mostly the video cards, so I'll add 200W in order to figure in the power draw of the rest of the system which brings the total to 650W. However, the PSU is not 100% efficient, so I'll assume that it's 85% efficient which would result in a 550W power draw from the PSU at the extreme most. That is, it's unrealistically high.
Originally Posted by Nvidia-Brownies
Well yes, but you should have head-room for capacitor aging, and future upgrades. Gotta think ahead nowadays, twocables!
I am already taking capacitor aging into consideration.
Regarding future upgrades, all I'm doing is telling him much headroom he has. After all, he already owns the TX750.
So, you're not telling me anything that I don't already know, but I thank you for your concern.
Final edit: Not only that, but capacitor aging is MUCH less of a concern with enthusiast-class PSUs like the TX750. These kind of PSUs are MUCH tougher than you think and they last much longer than you think. Besides, he's just asking a simple question, and so I'm providing a simple answer.
Edited by TwoCables - 7/20/12 at 3:40pm