i just upgraded my ram from 16 gig kingston hyper blue 1600mhz to corsair vengence 32 gig 1600mhz. when i check with window,it says 32 gig memory installed but says only 16 gig usable. i am running windows 7 64 bit with the sabertooth 990x motherboard and the amd fx8150 black edition cpu with a 750 watt power supply. should i return the other 16 gig and get my 100.00$ back? or is there a way to make all 32 gig work? i also am running two hd 6770 video cards in crossfire mode. each card is 1 gig each.
thanks
thanks