The graphics card should be changed if it gives a poor performance or if you want more speed options for the computer games. In the first case, you need to first verify that the graphics card is the reason for the poor performance and not the computer. To do this, use the scan disk or defragmentation options and look for bad sectors on the hard disk. You can also try using other ways to speedup your computer. If they do not work, you can conclude that the lowered performance is due to the faulty working of the graphics card. Once it has been established that the graphics card is responsible for the low speed, you should upgrade the graphics card.
Some graphics cards are integrated in the computer motherboard and some are are externally connected to the computer. Older versions of motherboards used a PCI (peripheral computer Interconnect) slot in order to plug-in the graphics card. Newer versions of computers use the accelerated graphics port (AGP). The latest version of computers use the PCIexpress which has a speed twice of the AGP slots.
The task of upgrading the graphics card in your desktop computer, involves finding out the type of graphics card slot in your computer motherboard. If your computer system is relatively quite old, then it is likely that it has a PCI slot. In this case, you have to upgrade related hardware in your computer system, as well. This is because, nowadays, graphic cards compatible only with PCIexpress are available. Additionally, these graphic cards also render high-speed outputs.
The power supply required for a graphics card should also be considered before buying the graphics card. The power supply or wattage of the computer must be checked. The power supply ratings range from 350-500W. Also, the available computer RAM must be taken into consideration. Minimum RAM of 512 MB is required. Once with all these steps done, you can buy a new graphics card for your computer system. Make sure that you compare the video cards available in the market, and choose one that best suits your needs.
To remove the older graphics card and upgrade the computer hardware to a new video card, follow the steps given below:
- If you already have a graphics card, un-install the drivers of the same. Download the drivers of the new graphics card purchased and store them on your computer system.
- Remove the overclocks, usually set to increase the performance of your computer by increasing the clock rate. Set the computer system to its original specifications and turn-off your computer system.
- The power cord should be unplugged. Open the cabinet and search for your PCIexpress slot. The PCIexpress slot has a locking clip which is used to mount the graphics card. Remove the older graphics card and mount the newer one. Store the older graphics card in an anti-static bag as you can use it as a back-up.
- The computer system can then be switched on, after carefully placing the graphics card in its slot. Start your computer and install the drivers which were earlier downloaded. This ends the up-gradation process and you can start your computer games.