Linuxmint, 18.3 Sylvia. I plan to instal a SSD, but the interface is only SATA 1.Go to the Crucial.com web site to see what kind of RAM you need. They can also tell you what the RAM capacity of the machine is. I doubt 8GB would be worth it. Installing an SSD (if you have not already) would yield the greatest improvement. What OS are you running?