A computer has two types of memory i.e. primary memory (RAM) and secondary memory (HDD/SDD) for data storage. HDD or SDD are the types of secondary memory in a computer facilitating data storage at a large scale (in GBs), while RAM (Random Access Memory) stores the data that is currently under execution, but in any random order. Operating system disunites a user-accessed program that is currently being executed into small fragments in the RAM, and this is termed as a process. Therefore, more the size of primary memory, faster is the execution.
Mac OS X requires minimum 1GB RAM to install and work properly; however, if you run several graphical applications (eg. Photoshop), it should be 2GB at least or more. Upgrading RAM certainly is a better fix for slow Mac, but is not usually preferred. Though Mac is the fastest and securest computer operating system, it usually slows down under a slew of circumstances. Refer to below discussed easy and simple steps to fix a slow Mac machine.
Remove Login Items
Some newly installed applications on a Mac machine auto-create a startup action for themselves. This startup action executes every time whenever a Mac machine boots up, thereby utilizing system resources, such as RAM, Processor etc. and minimizing normal startup speed. Disable these startup activities to get a faster startup by going to System Preferences-> Accounts-> ‘Login Items’. Select the application name and click (-) button to remove it.
When you turn on a Mac machine, loading the desktop is one of the initial tasks executed by the system. The fraction of time it consumes during boot is dependent on the number of docks and icons located on the desktop. Therefore, remove these objects from the desktop to get a better startup. You can place these objects in a folder instead.
Hard Drive Cleanup
The amount of data stored on a Mac hard drive affects Mac machine’s startup. Therefore, go through the entire Mac volumes and make sure that the data stored on them is not useless. Advising for hard drive clean up is not intended to make you delete the data (that is currently not in use), but to shift to any external data storage device, such as external hard drive, USB devices or a network drive (if available).
Reducing Installed Apps
The applications installed on a Mac machine also contribute in consumption of hard drive space as well as RAM and result in a slow performance. Make sure to install only those applications that are to be used, but not those you are going to use later on.
Above discussed tips to speed up Mac are very simple, which you can easily refer to. Alternatively, you can use commercial Mac speedup software as a fix for slow Mac.