No..notthe kind that comes with age. I have some pretty decent Cosair 16gb installed. I have 4gb of some OEM memory that came with my Dell about 6 years ago. I was thinking about adding the 4gb to get a total of 20 gbs. But will this additioanl memory (assuming it's slower and not as effecient as the cosair) just wind up slowing thigns down ? Kind of like the weakest link syndrone ?