The graphics card is the device in a desktop computer that calculates the data displayed on the screen in the form of images. Along with the computer's CPU, the graphics card works to provide the best possible performance in everything from heavy games to large graphical tasks. Graphics cards have their own GPU, which most of all is comparable to the PC's CPU - only it works with the graphics output from the PC.
When you search for graphics cards, you can see that they also have a lot of memory. This amount of so-called VRAM is crucial if you want to run a heavy game in high settings while running it in high resolution. You can play a game on high settings in low resolution, but as soon as you turn up the resolution, it begins to pull some VRAM.
In addition, it is important to check if the graphics card physically fits into the case. A newer GPU/GFX will probably not fit into a minitower case.
Something else is that you should check if the power supply you have is powerful enough to keep the graphics card running. Most graphics cards require that the power supply has a certain effect. For example, a graphics card may require a power supply of at least 500 Watt to work. This is particularly important as the graphics card is the component that uses the most power compared with all other components.
Proshop has a large selection of graphics cards from some of the best manufacturers on the market today, such as: ASUS, EVGA, Gigabyte, MSI, Palit and Sapphire. Buy a Nvidia/AMD graphics card today on offer and get a cheap price.