Originally Posted by newls1
OK, lets make something clear here: is your 620hx a single 12v rail, or multiple? do you know? I wasn't aware that corsair made that unit with multi rails (YUCK) If your PSU is a single 12v rail, no need to upgrade, unless you intend later on to add more stuff.
Its this one http://www.newegg.com/Product/Produc...82E16817139002
I think even though the specs say three rails the 620hx have a single physical rail. (Emulation?) And i believe its also true for corsair's 750tx.