I upgraded to 12 g. corsair vengence..ddr3 triple ch...i wanted to know can i use the six gig. I had..also ddr3 triple ch. ..both sets can run @1200/1333/1600...im using msi x58 platinum board..i920..oc @ 3.6ghz.. antec 750w.power source.msi cyclone graphics card o.c...