What is 2rx8 pc3 ram Tags: Memory RAM Toshiba Last response: January 2, 2013 2:53 AM in Memory Share ryudragon27 January 2, 2013 2:52:07 AM i have a toshiba satellite c875, and i would like to upgrade the ram to 16 gb, i have 1 stick of 4 gb 2rx8 ram, and 2 slots to put it in, so do i have to get rid of the 4gb and put in 2 8 gb sticks of ddr3 ram? More about : 2rx8 pc3 ram ryudragon27 January 2, 2013 2:53:41 AM oops, i posted accidentaly, as i was saying, the stick in there said 4gb 2rx8 pc3, so can my laptop run ddr3? m 0 l Can't find your answer ? Ask ! Publish Read discussions in other Memory categories Compatibility DDR2 DDR3 Dual Channel RAM Corsair G.SKILL !