Graphics card nowadays comes in-built with the PC but earlier, it had to be installed separately. However, many faces problem in upgrading graphics card. If the PC you are using is old, upgrading the graphics card will not be possible but it can be done by upgrading the processor, RAM, power supply and the motherboard but it will cost a lot. So it is advisable to buy a new PC as now a days, PCs comes with graphics card integrated in it.
