Hi guys, Just got my new PC and it already has some mushkin DDR3 2gb x2 in (Bought the i5 bundle from aria). My question is I've replace the mushkin RAM with 2x4gb DDR3 corsair vengeance sticks, is it possible to keep the other mushkin ones in as well and if so what arrangement? (IE 1x2gb and 1x4gb on each channel or 2x4gb and 2x2gb ??) Not sure if its compatible or anything would appreciate some info ! Thank you Bit tech heroes.