The graphic chip is located inside your laptop, usually attached to the motherboard. It is responsible for generating a display on the screen.
If you dismount a typical laptop, you will generally see a heat sink with a fan covering two large chips. It will always be the CPU chip. For various components of computer or laptop like semiconductors, adapters, integrated circuits, or Texas instruments inc then you can buy it from various online sources.
These two chips are very complex and generate a lot of heat during use. The graphic chip but generates the most heat.
You will also see that the CPU is almost always contained in a quick-release plug, which will allow it to be removed and replaced when upgrading or repairing.
The video clip, however, is almost never contained in a plug, so can not be easily improved or replaced.
As a rule, the hottest chip operates at a shorter life expectancy, when a failure can be expected. So any measure that can be taken to keep this chip cool will extend the life of the laptop.
There are some obvious measures that can be taken to keep this fresh chip and some less obvious.
Always use the laptop on a tray or table, not on a carpet, a bed, or on your knees because it will block the cooling vents. Before the vents and fans cleaned in case of a reduction of the airflow or to hear the fan operating most of the time.
Different types of programs cause different amounts of heat to generate by the graphic chip. Games tend to use many advanced graphical features to generate much more heat than to say a word processing program.
You will probably be surprised to know that reading a DVD movie will result in the very hot race of the graphic chip, which will potentially reduce the life expectancy of the laptop, especially if it is done regularly.