Hey guys,need a little help here,i have an intel 4770k,gigabyte z87 oc mb system with gtx 780 ti of msi and samsung ssd 840.i brought a cosair vengeance 2400 ram for that.the trouble is i could get only one pair of ram,i managed to convince one friend to get me another pair,but its taking too long.question is should i try to get this or go for another completely new pairs of ram?and if going for new set pls give suggestions.money is of no issue.help!!!