Take into account the following:
-Low quality Xion unit, I read many negative reviews. Before now I've never heard of such a company
-Risking other components
-You need to calculate using the outervision extreme calculator how much power at 100% load and enter your voltage and frequency when overclocked is needed on the +12v rail(s). Don't forget capacitor ageing, this can be important.
I used that calculator at 100% load for my calculation. You did not address my question.
I will look into capacitor aging, thank you for that.