RAM is also known as physical memory and the hard disk memory is called the virtual memory. The access time of physical memory is much lesser than the time taken to access virtual memory. One of the main reasons for the reduction in the speed of the system is the shortage of physical memory and the system is compelled to use the virtual memory.
The performance of Linux memory is hampered when there is a shortage of physical memory. There are different types of memories used by different systems and the user must have a thorough knowledge of the memory of the system that is being used.
As compared to windows or Microsoft, Linux physical memory is more capable which is its greatest advantage. This enhanced feature has made many a user to switch over from the old version of windows 98. Since many new features are added every day, it is necessary to increase the physical memory of Linux to keep on par.
When many web browsers like firefox and office suites are made to run on a system that has 128 MB of physical memory, the experience will be a sore thing. Hence, it is better to have Linux memory, as it possesses good strength on the field of hard ware.
When the operating system is good enough and the physical memory is not up to the desired level, there tends to be a waste of the processor and also waste of time, when the data is shuffled between the swap space and the physical memory. It is advisable to update the system now and then, for maintaining it at par with the industry trend.