Hi! I need your urgent help as i am buying the pc very soon. I am buying the corsair cx v2 430 psu. I am going for a i3 2100, Dh67-bl mobo with 4 gb of ram and hd 7850. When I checked the max wattage of my psu at their official site, it says 336W and max amperage is 28A. So I know it will run my graphic card. But what I would like to know is while playing these highend games and both CPU and Gpu maxed out, will my psu work out in the long run?Can it provide enough power to the whole system easily?Regarding ram i know it will support 1333mhz but i have many people are recommending me the 1666mhz ram.Why is that (when the bios will run the 1666mhz ram at 1333mhz)?Is 4gb ram enough for windows 7 64 bit?Do I need to add more since I will be playing as well? Thanks in advance!