A previously unknown Windows feature called System Main (formerly known as Superfetch) can help speed up your computer by enhancing its operating speed.
It works by monitoring your favourite apps and loading them into memory, so they are instantly available when you next need them, speeding up your PC.
However, it can cause a spike in your CPU and memory usage and can make a sluggish PC even slower.
On older hardware, it may be better to disable the feature, as it may be causing more harm than good.
The feature was first introduced in 2007 via Windows Vista, and some feel that it is now obsolete, similar to the soon-to-be obsolete ReadyBoost feature, also launched in Vista.
It may be best to disable SysMain if you have a PC with limited system resources to improve performance.
