PROmem4I just knew I had to upgrade the current memory of my laptop the minute it started hanging up after I loaded some newer programs in it which required higher ram consumption and that spelled doom for it. It even hanged every once in a while now so that further strengthened my resolve to upgrade. Usually Computer ram is the essential part needed to make the computer run smoother and faster and this is what I sorely needed too. My laptop needs an original Dell memory as from experience, this is the only module that worked for it the last time I upgraded it, but now I am glad to have heard that there are actually generic laptop memory modules that can run with just about any brands and its much cheaper than the original. I found this good shop in memoryupgrade.pro and its real great that they even have the Mac memory which I also need for my other macbook.