Once you've downloaded the video card driver that matches your hardware, see How Do I Update Drivers in Windows? Luckily, most video card drivers are auto-installable, meaning you won't need those manual update steps.If you don't know the specific video card driver that you need, or if you'd rather not download and install the driver manually, you can use a free program to automatically detect the driver you need and even download it for you.It's a good idea to get the latest display drivers and install them.In most cases, you do not get your display drivers from the company which manufactured the display adapter.Follow this AMD Radeon Video Card Drivers or this NVIDIA Ge Force Video Card Drivers link to get the latest and official download links for AMD or NVIDIA graphics card drivers.If you're not using an AMD or NVIDIA video card, see How To Find and Download Drivers From Manufacturer Websites for more information on finding the right drivers for your card.If you know what video card driver you need, you can go to directly to the manufacturer's website and manually download it.This is always the best way to get drivers because you can be confident that the driver is stable and doesn't contain any malware.
Still other cards may have inputs for video editing and other advanced tasks.
Using a dedicated video card may improve overall system performance because it includes its own RAM, power regulators, and cooling so that the system RAM and CPU can be used for other things.
In Windows, the easiest way to see what video card you have is to use Device Manager (see how to get there here).
Those drivers are almost always out of date by the time you get the video card.
You should download the latest drivers from the GPU manufacturer's web site.