lol my firefox is open aswell with about 8 tabs at a time lol thinking of only adding 4gb more for like $30 witch is pretty good i would think maybe a single 8gb dim added but thinking having the 2x 4gb ones plus 16 would be a lot more ram then necessary at 24GB then i could have either 20gb with a 8gb dimm or 16gb if i get a single 4gb one