Speed up your computers by getting a memory upgrade

I nearly wanted to throw my laptop when it hanged up on me at the most important points of a document and presentation I was preparing for my boss. After having it seen ASAP, it was just deemed that a memory upgrade was necessary as it was getting too clogged up with applications that I was running simultaneously. I needed to purchase a Mac memory as this was an original mac book and I was quickly told of this good online store for laptop memory and that was memoryupgrade.pro. I was told that even if I ran 5 applications at any one time, this will never be a problem to run if I upgrade to at least 2 Gigabyte or even 4 Gigabyte memory module. If this will get the job done for me, then so be it, and I will even upgrade all my computers at home if this proves to be the real case, which in fact it is.