Hi guys I have a question, well two actually. Ok first of I've been looking to upgrade my hd 7850 to a r9 and have been having issues deciding which card to choose beteen the two versions of the 280x. So should i get the dual x oc 280x or the toxic version? is there any diffrence between the two cards? Oh and i plan on oc but without messing with voltages,so yeah which of those two would be better for that? And another question, would my corsiar cx 500 watt psu be able to power one of those two(even when oc'd on stock volts?) Thanks in advance!