Computer Services Oakleigh - Customer called us claiming his Mac was running slow and that he ran multiple virus scans on his computer and found nothing. We went out to have a look and noticed the RAM was running at full capacity, we upgraded the RAM to 8GB from 4GB and noticed a significant change in performance. Older Macbook's can get to a stage where they start to run slower as the new release of OSX versions require more RAM to utilise the added features a simple RAM upgrade can make a huge difference.