thinking of increasing my my memory from 6gb to 12gb corsair triple channel ddr3 pc3-12800c9 16000mhz as im buying software hdr type that will benefit from more memory?can some one tell me if this worth doing for my system will i gain from this ,also will it be a easy install ,is it going to be plug and play thing or do i need to adjust anything within my system .using ga-x58a -ud3r board and i7 -950 . and im right in thinking i have to upgrade in multiples of 3 so either 6,9,12gb depending on size of memory purchased ie 2,3,4 gb or can i have more than 3 memory chips installed on my system ? does increased memory speed up system or the mhz of memory or both .