Todays memory hungry operating systems and applications have made it more important than ever to choose the right amount and type of RAM for your needs. Not enough RAM will have a very negative effect on your PC experience, whereas the performance benefit of having the max possible is marginal. RAM speed is also very important and you will find higher-performing RAM has heatsinks to help with heat dissipation. If your PC supports dual-channel RAM it is highly recommended to run two RAM modules instead of one to increase your performance.